Publications and communications of Damien Hutsemekers

Rahatgaonkar, R., Carvajal, J. P., Puzia, T. H., Luco, B., Jehin, E., Hutsemekers, D., Opitom, C., Manfroid, J., Aravind, K., Marsset, M., Yang, B., Buchanan, L., Fraser, W. C., Forbes, J., Bannister, M., Bodewits, D., Bolin, B. T., Belyakov, M., Knight, M. M., ... Vander Donckt, M. (01 December 2025). Very Large Telescope Observations of Interstellar Comet 3I/ATLAS. II. From Quiescence to Glow: Dramatic Rise of Ni I Emission and Incipient CN Outgassing at Large Heliocentric Distances. Astrophysical Journal, 995, 34. doi:10.3847/2041-8213/ae1cbc

Opitom, C., Snodgrass, C., Jehin, E., Bannister, M. T., Bufanda, E., Deam, S. E., Dorsey, R. C., Ferrais, M., Hmiddouch, S., Knight, M. M., Kokotanekova, R., Leicester, B., Marsset, M., Murphy, B., Okoth, V., Ridden-Harper, R., Vander Donckt, M., Ferellec, L., Hutsemekers, D., ... Benkhaldoun, Z. (01 November 2025). Snapshot of a new interstellar comet: 3I/ATLAS has a red and featureless spectrum. Monthly Notices of the Royal Astronomical Society, 544, 31-L36. doi:10.1093/mnrasl/slaf095

Blond Hanten, E., Rousselot, P., Jehin, E., Hardy, P., Hutsemekers, D., & Manfroid, J. (01 October 2025). 14NH, 14ND, and 15NH cometary fluorescence models and D/H measurement in NH. Astronomy and Astrophysics, 702, 257. doi:10.1051/0004-6361/202555354

Marin, F., Pursimo, T., Liodakis, I., Lindfors, E., Biedermann, J., Hutsemekers, D., & Turkki, M. (01 October 2025). Spectropolarimetry of NGC 1275 reveals a narrow-line radio galaxy with polarization parallel to its radio jet axis. Astronomy and Astrophysics, 702, 16. doi:10.1051/0004-6361/202556163

Naddaf Moghaddam, M. H., Martínez-Aldama, M. L., Marziani, P., Czerny, B., & Hutsemekers, D. (01 October 2025). Quasar main sequence unfolded by 2.5D FRADO: Natural expression of Eddington ratio, black hole mass, and inclination. Astronomy and Astrophysics, 702, 13. doi:10.1051/0004-6361/202556852

Hmiddouch, S., Jehin, E., Lippi, M., Vander Donckt, M., Aravind, K., Hutsemekers, D., Manfroid, J., Jabiri, A., Moulane, Y., & Benkhaldoun, Z. (01 September 2025). Variations in the volatile-driven activity of comet C/2017 K2 (PanSTARRS) revealed by long-term multiwavelength observations. Astronomy and Astrophysics, 701, 61. doi:10.1051/0004-6361/202555864

Marin, F., Hutsemekers, D., & Jorstad, S. (01 August 2025). A new type-1 transition in NGC 1346 revealed by (spectro)polarimetry. Astronomy and Astrophysics, 700, 206. doi:10.1051/0004-6361/202555176

Hall, P. B., Sadavoy, S. I., Hutsemekers, D., Everett, J. E., & Rafiee, A. (01 June 2025). Erratum: "Acceleration and Substructure Constraints in a Quasar Outflow" (2007, ApJ, 665, 174). Astrophysical Journal, 985, 266. doi:10.3847/1538-4357/add71e

Hutsemekers, D., & Sluse, D. (01 March 2025). Evidence of a diffuse, extended continuum source in quasars from the relative sizes of the broad line region and the UV-optical continuum source measured with microlensing. Astronomy and Astrophysics, 695, 10. doi:10.1051/0004-6361/202453457

Marin, F., Hutsemekers, D., Jiang, C.-Z., Antonucci, R., Ogle, P. M., Bagul, A., Ramos Almeida, C., & Berton, M. (01 March 2025). Scattered synchrotron emission and a giant torus revealed in polarized light in the nearest radio galaxy Centaurus A. Astronomy and Astrophysics, 695, 55. doi:10.1051/0004-6361/202452663

Naddaf Moghaddam, M. H., Martinez-Aldama, M. L., Hutsemekers, D., Savic, D., & Czerny, B. (2025). H$β$ line shape and radius-luminosity relation in 2.5D FRADO. Astronomy and Astrophysics.

Hutsemekers, D., Sluse, D., & Savić, Đ. (01 November 2024). Size and kinematics of the low-ionization broad emission line region from microlensing-induced line profile distortions in gravitationally lensed quasars. Astronomy and Astrophysics, 691, 292. doi:10.1051/0004-6361/202452240

Rousselot, P., Jehin, E., Hutsemekers, D., Opitom, C., Manfroid, J., & Hardy, P. (01 March 2024). 12CO+ and 13CO+ fluorescence models for measuring the 12C/13C isotopic ratio in comets. Astronomy and Astrophysics, 683, 50. doi:10.1051/0004-6361/202348027

Hutsemekers, D., Sluse, D., & Savic, D. (2024). Size and kinematics of the C IV broad emission line region from microlensing-induced line profile distortions in two gravitationally lensed quasars. Astronomy and Astrophysics, 687, 153. doi:10.1051/0004-6361/202450258

Lim, B., Nazé, Y., Chang, S.-J., & Hutsemekers, D. (01 January 2024). A Morphokinematic Study of the Enigmatic Emission Nebula NGC 6164/5 Surrounding the Magnetic O-type Star HD 148937. Astrophysical Journal, 961 (1), 72(11. doi:10.3847/1538-4357/ad12c4

Savic, D., Hutsemekers, D., & Sluse, D. (2024). Probing the broad line region geometry and size of the gravitationally lensed quasar Q2237+0305 with microlensing time series. Astronomy and Astrophysics, 687, 114. doi:10.1051/0004-6361/202347953

Kumar Aluri, P., Cea, P., Chingangbam, P., Chu, M.-C., Clowes, R. G., Hutsemekers, D., Kochappan, J. P., Lopez, A. M., Liu, L., Martens, N. C. M., Martins, C. J. A. P., Migkas, K., Ó Colgáin, E., Pranav, P., Shamir, L., Singal, A. K., Sheikh-Jabbari, M. M., Wagner, J., Wang, S.-J., ... Zhao, W. (01 May 2023). Is the observable Universe consistent with the cosmological principle? Classical and Quantum Gravity, 40, 094001. doi:10.1088/1361-6382/acbefc

Marin, F., Hutsemekers, D., Liodakis, I., Antonucci, R., Mandarakas, N., Lindfors, E., Blinov, D., Barnouin, T., & Savic, D. (01 May 2023). Polarimetry of the potential binary supermassive black hole system in J1430+2303. Astronomy and Astrophysics, 673, 126. doi:10.1051/0004-6361/202346115

Hutsemekers, D., Sluse, D., Savic, D., & Richards, G. T. (01 April 2023). Microlensing of the broad emission line region in the lensed quasar J1004+4112. Astronomy and Astrophysics, 672, 45. doi:10.1051/0004-6361/202245490

Moulane, Y., Jehin, E., Manfroid, J., Hutsemekers, D., Opitom, C., Shinnaka, Y., Bodewits, D., Benkhaldoun, Z., Jabiri, A., Hmiddouch, S., Vander Donckt, M., Pozuelos, F. J., & Yang, B. (01 February 2023). Activity and composition of the hyperactive comet 46P/Wirtanen during its close approach in 2018. Astronomy and Astrophysics, 670, 159. doi:10.1051/0004-6361/202244779

Anderson, S. E., Rousselot, P., Noyelles, B., Opitom, C., Jehin, E., Hutsemekers, D., & Manfroid, J. (01 October 2022). The N2 production rate in comet C/2016 R2 (PanSTARRS). Monthly Notices of the Royal Astronomical Society, 515, 5869-5876. doi:10.1093/mnras/stac2091

Rousselot, P., Anderson, S. E., Alijah, A., Noyelles, B., Opitom, C., Jehin, E., Hutsemekers, D., & Manfroid, J. (01 May 2022). N2+ fluorescence spectrum of comet C/2016 R2 (PanSTARRS). Astronomy and Astrophysics, 661, 131. doi:10.1051/0004-6361/202142829

Mahy, L., Lanthermann, C., Hutsemekers, D., Kluska, J., Lobel, A., Manick, R., Miszalski, B., Reggiani, M., Sana, H., & Gosset, E. (01 January 2022). Multiplicity of Galactic luminous blue variable stars. Astronomy and Astrophysics, 657, 4. doi:10.1051/0004-6361/202040062

Hutsemekers, D., & Sluse, D. (01 October 2021). Geometry and kinematics of the broad emission line region in the lensed quasar Q2237+0305. Astronomy and Astrophysics, 654, 155. doi:10.1051/0004-6361/202141820

Hutsemekers, D., Manfroid, J., Jehin, E., Opitom, C., & Moulane, Y. (01 August 2021). FeI and NiI in cometary atmospheres. Connections between the NiI/FeI abundance ratio and chemical characteristics of Jupiter-family and Oort-cloud comets. Astronomy and Astrophysics, 652, 1. doi:10.1051/0004-6361/202141554

Kelley, M. S. P., Lister, T., Sharma, K., Kumar, H., Bhalerao, V., Anupama, G. C., Barway, S., Morris, C. S., CA, U., Hasubick, W., Germany, B., Gonzalez, J. J., Spain, L., Jehin, E., Moulane, Y., Manfroid, J., Pozuelos, F., Ferrais, M., & Hutsemekers, D. (01 July 2021). Comet C/2020 r4 (atlas). Central Bureau Electronic Telegrams, 4996, 1.

Opitom, C., Jehin, E., Hutsemekers, D., Shinnaka, Y., Manfroid, J., Rousselot, P., Raghuram, S., Kawakita, H., Fitzsimmons, A., Meech, K., Micheli, M., Snodgrass, C., Yang, B., & Hainaut, O. (01 June 2021). The similarity of the interstellar comet 2I/Borisov to Solar System comets from high-resolution optical spectroscopy. Astronomy and Astrophysics, 650, 19. doi:10.1051/0004-6361/202141245

Manfroid, J., Hutsemekers, D., & Jehin, E. (19 May 2021). Iron and nickel atoms in cometary atmospheres even far from the Sun. Nature, 593, 372. doi:10.1038/s41586-021-03435-0

Raghuram, S., Bhardwaj, A., Hutsemekers, D., Opitom, C., Manfroid, J., & Jehin, E. (01 March 2021). A physico-chemical model to study the ion density distribution in the inner coma of comet C/2016 R2 (Pan-STARRS). Monthly Notices of the Royal Astronomical Society, 501, 4035. doi:10.1093/mnras/staa3885

Hutsemekers, D., Agis-Gonzalez, B., Marin, F., & Sluse, D. (01 December 2020). Spectropolarimetry of the changing-look active galactic nucleus Mrk 1018. Astronomy and Astrophysics, 644, 5. doi:10.1051/0004-6361/202039760

Crovisier, J., Colom, P., Biver, N., Bockelee-Morvan, D., Cognard, I., Jehin, E., Moulane, Y., Manfroid, J., Pozuelos, F., Hutsemekers, D., Wyatt, C., Camilleri, P., Hasubick, W., Goiato, M., Gonzalez, J. J., Yoshimoto, M., & Aguiar, J. G. D. S. (01 August 2020). Comet 88P/HOWELL. Central Bureau Electronic Telegrams, 4840, 1.

Moulane, Y., Jehin, E., Rousselot, P., Manfroid, J., Shinnaka, Y., Pozuelos Romero, F. J., Hutsemekers, D., Opitom, C., Yang, B., & Benkhaldoun, Z. (01 August 2020). Photometry and high-resolution spectroscopy of comet 21P/Giacobini-Zinner during its 2018 apparition. Astronomy and Astrophysics, 640 (A54), 14. doi:10.1051/0004-6361/202037997

Marin, F., & Hutsemekers, D. (01 April 2020). Tracking the state transitions in changing-look active galactic nuclei through their polarized-light echoes. Astronomy and Astrophysics, 636, 23, pp. 1-13. doi:10.1051/0004-6361/201936123

Jehin, E., Moulane, Y., Pozuelos, F., Ferrais, M., Manfroid, J., Hutsemekers, D., Sato, H., & Nakano, S. (01 March 2020). Comet 2I/2019 q4 (borisov). Central Bureau Electronic Telegrams, 4729, 1.

Raghuram, S., Hutsemekers, D., Opitom, C., Jehin, E., Bhardwaj, A., & Manfroid, J. (01 March 2020). Forbidden atomic carbon, nitrogen, and oxygen emission lines in the water-poor comet C/2016 R2 (Pan-STARRS). Astronomy and Astrophysics, 635, 108, pp. 1-15. doi:10.1051/0004-6361/201936713

Hutsemekers, D., Sluse, D., & Kumar, P. (01 January 2020). Spatially separated continuum sources revealed by microlensing in the gravitationally lensed broad absorption line quasar SDSS J081830.46+060138.0⋆. Astronomy and Astrophysics, 633, 101, pp. 1-7. doi:10.1051/0004-6361/201936973

Crovisier, J., Colom, P., Biver, N., Bockelee-Morvan, D., Jehin, E., Moulane, Y., Manfroid, J., Pozuelos, F., Hutsemekers, D., Nakamura, A., Yoshimoto, K., Sato, H., & Nakano, S. (01 November 2019). Comet 2I/2019 q4 (borisov). Central Bureau Electronic Telegrams, 4691, 1.

Yang, B., Jehin, E., Pozuelos Romero, F. J., Moulane, Y., Shinnaka, Y., Opitom, C., Hsieh, H. H., Hutsemekers, D., & Manfroid, J. (01 November 2019). Comet 66P/du Toit: not a near-Earth main belt comet. Astronomy and Astrophysics, 631. doi:10.1051/0004-6361/201936469

Hutsemekers, D., Braibant, L., Sluse, D., & Goosmann, R. (01 September 2019). Constraining the geometry and kinematics of the quasar broad emission line region using gravitational microlensing. II. Comparing models with observations in the lensed quasar HE0435-1223. Astronomy and Astrophysics, 629, 43, pp. 1-5. doi:10.1051/0004-6361/201731087

Rousselot, P., Opitom, C., Jehin, E., Hutsemekers, D., Manfroid, J., Villarreal, M. N., Li, J.-Y., Castillo-Rogez, J., Russell, C. T., Vernazza, P., Marsset, M., Roth, L., Dumas, C., Yang, B., Prettyman, T. H., & Mousis, O. (01 August 2019). Search for water outgassing of (1) Ceres near perihelion. Astronomy and Astrophysics, 628, 22, pp. 1-6. doi:10.1051/0004-6361/201935738

Hutsemekers, D., Agis-Gonzalez, B., Marin, F., Sluse, D., Ramos Almeida, C., & Acosta Pulido, J.-A. (01 May 2019). Polarization of changing-look quasars. Astronomy and Astrophysics, 625, 54, pp.1-6. doi:10.1051/0004-6361/201834633

Opitom, C., Hutsemekers, D., Jehin, E., Rousselot, P., Pozuelos Romero, F. J., Manfroid, J., Moulane, Y., Gillon, M., & Benkhaldoun, Z. (01 April 2019). High resolution optical spectroscopy of the N2-rich comet C/2016 R2 (PanSTARRS). Astronomy and Astrophysics, 624, 64, pp.1-14. doi:10.1051/0004-6361/201834357

Hutsemekers, D., Borguet, B., Sluse, D., & Pelgrims, V. (01 November 2018). Optical linear polarization measurements of quasars obtained with the Very Large Telescope at Paranal Observatory⋆. Astronomy and Astrophysics, 620, 68, pp. 1-3. doi:10.1051/0004-6361/201833797

Agis-Gonzalez, B., Hutsemekers, D., & Miniutti, G. (01 April 2018). A Changing-Look AGN to Be Probed by X-ray Polarimetry. Galaxies, 6, 52. doi:10.3390/galaxies6020052

Yang, B., Hutsemekers, D., Shinnaka, Y., Opitom, C., Manfroid, J., Jehin, E., Meech, K. J., Hainaut, O. R., Keane, J. V., & Gillon, M. (01 February 2018). Isotopic ratios in outbursting comet C/2015 ER61. Astronomy and Astrophysics, 609, 4, pp.1-4. doi:10.1051/0004-6361/201732100

Braibant, L., Hutsemekers, D., Sluse, D., & Goosmann, R. (01 November 2017). Constraining the geometry and kinematics of the quasar broad emission line region using gravitational microlensing. I. Models and simulations. Astronomy and Astrophysics, 607, 32, pp. 1-17. doi:10.1051/0004-6361/201731086

Hutsemekers, D., Hall, P., & Sluse, D. (01 October 2017). Optical linear polarization measurements of quasars obtained with the 3.6 m telescope at the La Silla Observatory. Astronomy and Astrophysics, 606, 101, pp. 1-4. doi:10.1051/0004-6361/201731632

Hutsemekers, D., Braibant, L., Sluse, D., Anguita, T., & Goosmann, R. (01 September 2017). New constraints on quasar broad absorption and emission line regions from gravitational microlensing. Frontiers in Astronomy and Space Sciences, 4, 18, pp. 1-6. doi:10.3389/fspas.2017.00018

Hutsemekers, D., Agis-Gonzalez, B., Sluse, D., Ramos Almeida, C., & Acosta Pulido, J.-A. (01 July 2017). Polarization of the changing-look quasar J1011+5442. Astronomy and Astrophysics, 604, 3, pp.1-4. doi:10.1051/0004-6361/201731397

Snodgrass, C., A'Hearn, M. F., Aceituno, F., Afanasiev, V., Bagnulo, S., Bauer, J., Bergond, G., Besse, S., Biver, N., Bodewits, D., Boehnhardt, H., Marchant, J., McKay, A. J., McNeill, A., Meech, K. J., Micheli, M., Mohammed, I., Monguió, M., Moreno, F., ... Manfroid, J. (01 May 2017). The 67P/Churyumov-Gerasimenko observation campaign in support of the Rosetta mission. Philosophical Transactions. Mathematical, Physical and Engineering Sciences, 375, 20160249, pp.1-22. doi:10.1098/rsta.2016.0249

Mahy, L., Hutsemekers, D., Nazé, Y., Royer, P., Lebouteiller, V., & Waelkens, C. (01 March 2017). Evolutionary status of the Of?p star HD 148937 and of its surrounding nebula NGC 6164/5. Astronomy and Astrophysics, 599 (A61), 17. doi:10.1051/0004-6361/201629585

Braibant, L., Hutsemekers, D., Sluse, D., & Anguita, T. (July 2016). The different origins of high- and low-ionization broad emission lines revealed by gravitational microlensing in the Einstein cross. Astronomy and Astrophysics, 592, 23, pp. 1-10. doi:10.1051/0004-6361/201628594

Pelgrims, V., & Hutsemekers, D. (April 2016). Evidence for the alignment of quasar radio polarizations with large quasar group axes. Astronomy and Astrophysics, 590, 53, pp. 1-9. doi:10.1051/0004-6361/201526979

Hubert, B., Opitom, C., Hutsemekers, D., Jehin, E., Munhoven, G., Manfroid, J., Bisikalo, D. V., & Shematovich, V. I. (2016). An inversion method for cometary atmospheres. Icarus, 277, 237-256. doi:10.1016/j.icarus.2016.04.044

Opitom, C., Guilbert-Lepoutre, A., Jehin, E., Manfroid, J., Hutsemekers, D., Gillon, M., Magain, P., Roberts-Borsani, G., & Witasse, O. (2016). Long-term activity and outburst of comet C/2013 A1 (Siding Spring) from narrow-band photometry and long-slit spectroscopy. Astronomy and Astrophysics, 589, 8, pp. 1-12. doi:10.1051/0004-6361/201527628

Hutsemekers, D., Sluse, D., Braibant, L., & Anguita, T. (01 December 2015). Polarization microlensing in the quadruply imaged broad absorption line quasar H1413+117. Astronomy and Astrophysics, 584, 61 , pp. 1-5. doi:10.1051/0004-6361/201527243

Sluse, D., Hutsemekers, D., Anguita, T., Braibant, L., & Riaud, P. (01 October 2015). Evidence for two spatially separated UV continuum emitting regions in the Cloverleaf broad absorption line quasar. Astronomy and Astrophysics, 582, 109-12. doi:10.1051/0004-6361/201526832

Pelgrims, V., & Hutsemekers, D. (01 July 2015). Polarization alignments of quasars from the JVAS/CLASS 8.4-GHz surveys. Monthly Notices of the Royal Astronomical Society, 450, 4161-4173. doi:10.1093/mnras/stv917

Vamvatira-Nakou, C., Hutsemekers, D., Royer, P., Cox, N. L. J., Nazé, Y., Rauw, G., Waelkens, C., & Groenewegen, M. A. T. (June 2015). The Herschel view of the nebula around the luminous blue variable star AG Carinae. Astronomy and Astrophysics, 578, 108, pp. 1-16. doi:10.1051/0004-6361/201425090

Bisikalo, D. V., Shematovich, V. I., Gérard, J.-C., Jehin, E., Decock, A., Hutsemekers, D., Manfroid, J., & Hubert, B. (01 January 2015). Monte Carlo Simulation of Metastable Oxygen Photochemistry in Cometary Atmospheres. Astrophysical Journal, 798, 21, pp. 1-10. doi:10.1088/0004-637X/798/1/21

Hutsemekers, D., Braibant, L., Pelgrims, V., & Sluse, D. (01 December 2014). Alignment of quasar polarizations with large-scale structures. Astronomy and Astrophysics, 572, 18, pp. 1-7. doi:10.1051/0004-6361/201424631

Braibant, L., Hutsemekers, D., Sluse, D., Anguita, T., & García-Vergara, C. J. (01 May 2014). Microlensing of the broad-line region in the quadruply imaged quasar HE0435-1223. Astronomy and Astrophysics, 565, 11, pp. 1-6. doi:10.1051/0004-6361/201423633

De Becker, M., Hutsemekers, D., & Gosset, E. (May 2014). The XMM-Newton view of the yellow hypergiant IRC+10420 and its surroundings. New Astronomy, 29, 75-81. doi:10.1016/j.newast.2013.12.006

Rousselot, P., Pirali, O., Jehin, E., Vervloet, M., Hutsemekers, D., Manfroid, J., Cordier, D., Martin-Drumel, M.-A., Gruet, S., Arpigny, C., Decock, A., & Mousis, O. (01 January 2014). Toward a Unique Nitrogen Isotopic Ratio in Cometary Ices. Astrophysical Journal. Letters, 780, 17, pp. 1-5. doi:10.1088/2041-8205/780/2/L17

Vamvatira-Nakou, C., Hutsemekers, D., Royer, P., Nazé, Y., Magain, P., Exter, K., Waelkens, C., & Groenewegen, M. A. T. (14 August 2013). Herschel imaging and spectroscopy of the nebula around the luminous blue variable star WRAY 15-751. Astronomy and Astrophysics, 557, 20, pp. 1-17. doi:10.1051/0004-6361/201321853

Decock, A., Jehin, E., Hutsemekers, D., & Manfroid, J. (01 July 2013). Forbidden oxygen lines in comets at various heliocentric distances. Astronomy and Astrophysics, 555, 34. doi:10.1051/0004-6361/201220414

Hutsemekers, D., Cox, N. L. J., & Vamvatira-Nakou, C. (01 April 2013). A massive parsec-scale dust ring nebula around the yellow hypergiant Hen 3-1379. Astronomy and Astrophysics, 552, 6, pp. 1-4. doi:10.1051/0004-6361/201321380

Sluse, D., Hutsemekers, D., Courbin, F., Meylan, G., & Wambsganss, J. (01 August 2012). Microlensing of the broad line region in 17 lensed quasars. Astronomy and Astrophysics, 544, 62, pp. 1-28. doi:10.1051/0004-6361/201219125

Nazé, Y., Rauw, G., & Hutsemekers, D. (February 2012). The first X-ray survey of Galactic Luminous Blue Variables. Astronomy and Astrophysics, 538, 47, pp. 1-13.

Payez, A., Cudell, J.-R., & Hutsemekers, D. (25 October 2011). Can axionlike particles explain the alignments of the polarizations of light from quasars? Physical Review. D, Particles, Fields, Gravitation, and Cosmology, 84, 085029, pp. 1-17. doi:10.1103/PhysRevD.84.085029

Meech, K. J., A'Hearn, M. F., Adams, J. A., Bacci, P., Bai, J., Barrera, L., Battelino, M., Bauer, J. M., Becklin, E., Bhatt, B., Biver, N., Bockelée-Morvan, D., Bodewits, D., Böhnhardt, H., Boissier, J., Bonev, B. P., Borghini, W., Brucato, J. R., Bryssinck, E., ... Ziffer, J. E. (01 June 2011). EPOXI: Comet 103P/Hartley 2 Observations from a Worldwide Campaign. Astrophysical Journal, 734 (Letters), 1, pp. 1-9. doi:10.1088/2041-8205/734/1/L1

Sluse, D., Schmidt, R., Courbin, F., Hutsemekers, D., Meylan, G., Eigenbrod, A., Anguita, T., Agol, E., & Wambsganss, J. (01 April 2011). Zooming into the broad line region of the gravitationally lensed quasar Q2237+0305 = the Einstein Cross: III. Determination of the size and structure of the CIV and CIII] emitting regions using microlensing. Astronomy and Astrophysics, 528, 100-16. doi:10.1051/0004-6361/201016110

Shinnaka, Y., Kawakita, H., Kobayashi, H., Jehin, E., Manfroid, J., Hutsemekers, D., & Arpigny, C. (01 March 2011). Ortho-to-para Abundance Ratio (OPR) of Ammonia in 15 Comets: OPRs of Ammonia Versus 14N/15N Ratios in CN. Astrophysical Journal, 729, 81, pp. 1-15. doi:10.1088/0004-637X/729/2/81

Groenewegen, M. A. T., Waelkens, C., Barlow, M. J., Kerschbaum, F., Garcia-Lario, P., Cernicharo, J., Blommaert, J. A. D. L., Bouwman, J., Cohen, M., Cox, N., Decin, L., Exter, K., Gear, W. K., Gomez, H. L., Hargrave, P. C., Henning, T., Hutsemekers, D., Ivison, R. J., Jorissen, A., ... Wesson, R. (01 February 2011). MESS (Mass-loss of Evolved StarS), a Herschel Key Program. Astronomy and Astrophysics, 526, 162, pp. 1-18. doi:10.1051/0004-6361/201015829

Vamvatira-Nakou, C., Royer, P., Hutsemekers, D., Rauw, G., Nazé, Y., Exter, K., Waelkens, C., & Groenewegen, M. (01 January 2011). Herschel-PACS observations of Nebulae Ejected by Massive Stars. Bulletin de la Société Royale des Sciences de Liège, 80, 435-439.

Hutsemekers, D., Borguet, B., Sluse, D., Cabanac, R., & Lamy, H. (01 September 2010). Optical circular polarization in quasars. Astronomy and Astrophysics, 520 (Letters), 7, pp. 1-5. doi:10.1051/0004-6361/201015359

Hutsemekers, D., Borguet, B., Sluse, D., Riaud, P., & Anguita, T. (01 September 2010). Microlensing in H1413+117: disentangling line profile emission and absorption in a broad absorption line quasar. Astronomy and Astrophysics, 519, 103, pp. 1-14. doi:10.1051/0004-6361/200913247

Manfroid, J., Jehin, E., Hutsemekers, D., Cochran, A., Zucconi, J.-M., Arpigny, C., Schulz, R., Stuewe, & Ilyin, I. (01 August 2009). The CN isotopic ratios in comets. Astronomy and Astrophysics, 503, 613-624. doi:10.1051/0004-6361/200911859

Jehin, E., Bockelée-Morvan, D., Dello Russo, N., Manfroid, J., Hutsemekers, D., Kawakita, H., Kobayashi, H., Schulz, R., Smette, A., Stüwe, J., Weiler, M., Arpigny, C., Biver, N., Cochran, A., Crovisier, J., Magain, P., Rauer, H., Sana, H., Vervack, R. J., ... Zucconi, J.-M. (01 May 2009). A Multi-Wavelength Simultaneous Study of the Composition of the Halley Family Comet 8P/Tuttle. Earth, Moon, and Planets, 105, 343-349. doi:10.1007/s11038-009-9317-8

Hutsemekers, D., Manfroid, J., Jehin, E., Zucconi, J.-M., & Arpigny, C. (01 November 2008). The 16OH/18OH and OD/OH isotope ratios in comet C/2002 T7 (LINEAR). Astronomy and Astrophysics, 490 (Letters), 31-34. doi:10.1051/0004-6361:200810833

Bockelée-Morvan, D., Biver, N., Jehin, E., Cochran, A. L., Wiesemeyer, H., Manfroid, J., Hutsemekers, D., Arpigny, C., Boissier, J., Cochran, W., Colom, P., Crovisier, J., Milutinovic, N., Moreno, R., Prochaska, J. X., Ramirez, I., Schulz, R., & Zucconi, J.-M. (01 May 2008). Large Excess of Heavy Nitrogen in Both Hydrogen Cyanide and Cyanogen from Comet 17P/Holmes. Astrophysical Journal, 679 (Letters), 49-52. doi:10.1086/588781

Borguet, B., Hutsemekers, D., Letawe, G., Letawe, Y., & Magain, P. (2008). Evidence of a type 1/type 2 dichotomy in the correlation between quasar optical polarization and host-galaxy/extended emission position angles. Astronomy and Astrophysics, 478, 321-333. doi:10.1051/0004-6361:20077986

Letawe, Y., Magain, P., Letawe, G., Courbin, F., & Hutsemekers, D. (2008). Understanding the relations between QSOs and their host galaxies from combined HST imaging and VLT spectroscopy. Astrophysical Journal, 679 (2), 967-983. doi:10.1086/587866

Hall, P. B., Sadavoy, S. I., Hutsemekers, D., Everett, J. E., & Rafiee, A. (01 August 2007). Acceleration and Substructure Constraints in a Quasar Outflow. Astrophysical Journal, 665, 174-186. doi:10.1086/519273

Sluse, D., Claeskens, J.-F., Hutsemekers, D., & Surdej, J. (June 2007). Multi-wavelength study of the gravitational lens system RXS J1131-1231 - III. Long slit spectroscopy: micro-lensing probes the QSO structure. Astronomy and Astrophysics, 468 (3), 885-901. doi:10.1051/0004-6361:20066821

Nazé, Y., Rauw, G., Hutsemekers, D., Gosset, E., Manfroid, J., & Royer, P. (01 October 2006). The atypical emission-line star Hen 3-209. Monthly Notices of the Royal Astronomical Society, 371 (4), 1594-1600. doi:10.1111/j.1365-2966.2006.10731.x

Jehin, E., Manfroid, J., Hutsemekers, D., Cochran, A. L., Arpigny, C., Jackson, W. M., Rauer, H., Schulz, R., & Zucconi, J.-M. (01 April 2006). Deep Impact: High-Resolution Optical Spectroscopy with the ESO VLT and the Keck I Telescope. Astrophysical Journal, 641 (Letters), 145-148. doi:10.1086/504110

Sluse, D., Claeskens, J.-F., Altieri, B., Cabanac, R. A., Garcet, O., Hutsemekers, D., Jean, C., Smette, A., & Surdej, J. (01 April 2006). Multi-wavelength study of the gravitational lens system RXS J113155.4-123155. I. Multi-epoch optical and near infrared imaging. Astronomy and Astrophysics, 449, 539-550. doi:10.1051/0004-6361:20053148

Hutsemekers, D., Cabanac, R., Lamy, H., & Sluse, D. (01 October 2005). Mapping extreme-scale alignments of quasar polarization vectors. Astronomy and Astrophysics, 441, 915-930. doi:10.1051/0004-6361:20053337

Hutsemekers, D., Manfroid, J., Jehin, E., Arpigny, C., Cochran, A., Schulz, R., Stüwe, J. A., & Zucconi, J.-M. (01 September 2005). Isotopic abundances of carbon and nitrogen in Jupiter-family and Oort Cloud comets. Astronomy and Astrophysics, 440 (Letters), 21-24. doi:10.1051/0004-6361:200500160

Sluse, D., Hutsemekers, D., Lamy, H., Cabanac, R., & Quintana, H. (01 April 2005). New optical polarization measurements of quasi-stellar objects. The data. Astronomy and Astrophysics, 433, 757-764. doi:10.1051/0004-6361:20042163

Manfroid, J., Jehin, E., Hutsemekers, D., Cochran, A., Zucconi, J.-M., Arpigny, C., Schulz, R., & Stüwe, J. A. (01 March 2005). Isotopic abundance of nitrogen and carbon in distant comets. Astronomy and Astrophysics, 432 (Letters), 5-8. doi:10.1051/0004-6361:200500009

Lamy, H., & Hutsemekers, D. (01 November 2004). Polarization properties of broad absorption line QSOs: New statistical clues. Astronomy and Astrophysics, 427, 107-123. doi:10.1051/0004-6361:20041066

Jehin, E., Manfroid, J., Cochran, A. L., Arpigny, C., Zucconi, J.-M., Hutsemekers, D., Cochran, W. D., Endl, M., & Schulz, R. (01 October 2004). The Anomalous 14N/15N Ratio in Comets 122P/1995 S1 (de Vico) and 153P/2002 C1 (Ikeya-Zhang). Astrophysical Journal, 613 (Letters), 161-164. doi:10.1086/425254

Hutsemekers, D., Hall, P., & Brinkmann, J. (01 July 2004). Erratum: VLT + UVES spectroscopy of the low-ionization intrinsic absorber in SDSS J001130.56+005550.7. Astronomy and Astrophysics, 422, 509. doi:10.1051/0004-6361:20041003

Hutsemekers, D., Hall, P., & Brinkmann, J. (01 February 2004). VLT + UVES spectroscopy of the low-ionization intrinsic absorber in SDSS J001130.56+005550.7. Astronomy and Astrophysics, 415, 77-85. doi:10.1051/0004-6361:20031688

Hall, P. B., Hutsemekers, D., Anderson, S. F., Brinkmann, J., Fan, X., Schneider, D. P., & York, D. G. (01 August 2003). VLT+UVES Spectroscopy of the Ca II Low-Ionization Broad Absorption Line Quasar SDSS J030000.56+004828.0. Astrophysical Journal, 593, 189-202. doi:10.1086/376409

Sluse, D., Surdej, J., Claeskens, J.-F., Hutsemekers, D., Jean, C., Courbin, F., Nakos, T., Billeres, M., & Khmil, S. V. (01 July 2003). A quadruply imaged quasar with an optical Einstein ring candidate: 1RXS J113155.4-123155. Astronomy and Astrophysics, 406 (Letters), 43-46. doi:10.1051/0004-6361:20030904

Burud, I., Courbin, F., Magain, P., Lidman, C., Hutsemekers, D., Kneib, J. P., Hjorth, J., Brewer, J., Pompei, E., Germany, L., Pritchard, J., Jaunsen, A. O., Letawe, G., & Meylan, G. (February 2002). An optical time-delay for the lensed BAL quasar HE 2149-2745. Astronomy and Astrophysics, 383 (1), 71-81. doi:10.1051/0004-6361:20011731

Hutsemekers, D., & Lamy, H. (01 February 2001). Confirmation of the existence of coherent orientations of quasar polarization vectors on cosmological scales. Astronomy and Astrophysics, 367, 381-387. doi:10.1051/0004-6361:20000443

Hutsemekers, D., & Lamy, H. (01 June 2000). The optical polarization of radio-loud and radio-intermediate broad absorption line quasi-stellar objects. Astronomy and Astrophysics, 358, 835-840.

Lamy, H., & Hutsemekers, D. (01 April 2000). Spectropolarimetry of the iron low ionization broad absorption line quasar Q 0059-2735. Astronomy and Astrophysics, 356 (Letters), 9-12.

Lamy, H., & Hutsemekers, D. (01 March 2000). Optical polarization of 47 quasi-stellar objects: The data. Astronomy and Astrophysics. Supplement Series, 142, 451-456. doi:10.1051/aas:2000165

Hutsemekers, D. (01 April 1999). The orientation within the Galaxy and the Large Magellanic Cloud of nebulae ejected by massive stars. Astronomy and Astrophysics, 344, 143-150.

Hutsemekers, D., Lamy, H., & Remy, M. (01 December 1998). Polarization properties of a sample of broad absorption line and gravitationally lensed quasars. Astronomy and Astrophysics, 340, 371-380.

Hutsemekers, D. (01 April 1998). Evidence for very large-scale coherent orientations of quasar polarization vectors. Astronomy and Astrophysics, 332, 410-428.

Arpigny, C., Rauer, H., Manfroid, J., Hutsemekers, D., Jehin, E., Crovisier, J., & Jorda, L. (1998). Production and kinematics of sodium atoms in the coma of comet Hale-Bopp. Astronomy and Astrophysics, 334 (Letters), 53-56.

Ostensen, R., Remy, M., Lindblad, P. O., Refsdal, S., Stabell, R., Surdej, J., Barthel, P. D., Emanuelsen, P. I., Festin, L., Gosset, E., Hainaut, O., Hakala, P., Hjelm, M., Hjorth, J., Hutsemekers, D., Jablonski, M., Kaas, A. A., Kristen, H., Larsson, S., ... van Drom, E. (01 December 1997). ESO & NOT photometric monitoring of the Cloverleaf quasar. Astronomy and Astrophysics. Supplement Series, 126, 393-400. doi:10.1051/aas:1997273

Courbin, F., Hutsemekers, D., Meylan, G., Magain, P., & Djorgovski, S. G. (01 February 1997). Sub-arcsecond imaging and spectroscopy of the radio-loud highly polarized quasar PKS 1610-771. Astronomy and Astrophysics, 317, 656-660.

Rauw, G., Vreux, J.-M., Gosset, E., Hutsemekers, D., Magain, P., & Rochowicz, K. (01 February 1996). WR22: the most massive Wolf-Rayet star ever weighed. Astronomy and Astrophysics, 306, 771-782.

Courbin, F., Magain, P., Remy, M., Smette, A., Claeskens, J.-F., Hainaut, O., Hutsemekers, D., Meylan, G., & van Drom, E. (01 November 1995). Photometric monitoring (1987 to 1994) of the gravitational lens candidate UM 425. Astronomy and Astrophysics, 303, 1-7.

Hutsemekers, D., van Drom, E., Gosset, E., & Melnick, J. (01 October 1994). A dusty nebula around the luminous blue variable candidate HD 168625. Astronomy and Astrophysics, 290, 906-914.

Hutsemekers, D. (01 January 1994). Evidence for violent ejection of nebulae from massive stars. Astronomy and Astrophysics, 281 (Letters), 81-84.

Hutsemekers, D. (01 December 1993). Selective gravitational microlensing and line profile variations in the BAL quasar H 1413+117. Astronomy and Astrophysics, 280, 435-442.

Hutsemekers, D. (01 November 1993). Formation of P Cygni Line Profiles in Relativistically Expanding Atmospheres. II. The Effect of the Continuum Frequency Shape and Limb Darkening of the Core. Astrophysical Journal, 417, 97-101. doi:10.1086/173294

Surdej, J., Claeskens, J.-F., Crampton, D., Filippenko, A. V., Hutsemekers, D., Magain, P., Pirenne, B., Vanderriest, C., & Yee, H. K. C. (June 1993). Gravitational lensing statistics based on a large sample of highly luminous quasars. Astronomical Journal, 105, 2064-2078. doi:10.1086/116584

Magain, P., Surdej, J., Vanderriest, C., Pirenne, B., & Hutsemekers, D. (01 May 1993). Erratum - Q:1208+1011 - the Most Distant Multiply Imaged Quasar or a Binary. Astronomy and Astrophysics, 272, 383.

Magain, P., Surdej, J., Vanderriest, C., Pirenne, B., & Hutsemekers, D. (January 1992). Q 1208 + 1011 - The most distant imaged quasar, or a binary? Astronomy and Astrophysics, 253 (Letters), 13-16.

Hutsemekers, D., & van Drom, E. (01 November 1991). The nature of the nebula associated with the luminous blue variable star WRA 751. Astronomy and Astrophysics, 251, 620-624.

Hutsemekers, D., & van Drom, E. (01 August 1991). HR Carinae - A luminous blue variable surrounded by an arc-shaped nebula. Astronomy and Astrophysics, 248, 141-149.

Heydari-Malayeri, M., & Hutsemekers, D. (01 April 1991). The very massive star HDE269676 and its components. Astronomy and Astrophysics, 244, 64-68.

Heydari-Malayeri, M., & Hutsemekers, D. (01 March 1991). The most massive star of the largest H II region in the Small Magellanic Cloud. Astronomy and Astrophysics, 243, 401-404.

Hutsemekers, D., & Surdej, J. (October 1990). Formation of P Cygni line profiles in relativistically expanding atmospheres. Astrophysical Journal, 361, 367-380. doi:10.1086/169203

Surdej, J., & Hutsemekers, D. (01 July 1990). The nth order moment W(n)D of a resonance doublet P Cygni line profile. Astronomy and Astrophysics, 233, 141-152.

Detal, A., Surdej, J., Hutsemekers, D., Remy, M., & van Drom, E. (01 March 1990). Further observations of the light echoes from SN 1987 A. Astronomy and Astrophysics, 229, 427-430.

Hutsemekers, D., & van Drom, E. (1990). The supergiant Bep star CD - 42 11721 deg and its surrounding nebula. Astronomy and Astrophysics, 238, 134-139.

Hutsemekers, D., & Surdej, J. (01 July 1989). Revisited mass-loss rates for a sample of central stars of planetary nebulae. Astronomy and Astrophysics, 219, 237-238.

Hutsemekers, D., & Kohoutek, L. (01 May 1988). Study of AG Carinae. I - The 1977 spectrum of the star. Astronomy and Astrophysics. Supplement Series, 73, 217-224.

Hutsemekers, D., & Surdej, J. (1987). Revisited mass-loss rates for the nuclei of the planetary nebulae NGC 6210, NGC 6826 and NGC 6543 - The first order moment W1 of subordinate line profiles. Astronomy and Astrophysics, 173, 101-107.

Surdej, J., & Hutsemekers, D. (1987). Geometry of the mass-outflows around broad absorption line QSOs and formation of the complex Ly-alpha + N V line profile. Astronomy and Astrophysics, 177, 42-50.

Gosset, E., Hutsemekers, D., Swings, J.-P., & Surdej, J. (01 December 1985). Radial velocities along the light curve of the peculiar emission-line star GG Carinae. Astronomy and Astrophysics, 153, 71-78.

Hutsemekers, D., & Surdej, J. (01 December 1985). The structure and spectral characteristics of the low-excitation planetary nebula HD 316248. Astronomy and Astrophysics, 153, 245-248.

Gosset, E., Hutsemekers, D., & Surdej, J. (1985). CPD - 59 deg 2857 - A new red variable star. Publications of the Astronomical Society of the Pacific, 97, 67-71. doi:10.1086/131498

Hutsemekers, D. (1985). The ultraviolet spectrum of the Be star HD 50138. Astronomy and Astrophysics. Supplement Series, 60, 373-388.

Hutsemekers, D., & Surdej, J. (01 April 1984). The structure and physical conditions characterizing the emission-line galaxy He 2-10. Astronomy and Astrophysics, 133, 209-215.

Jehin, E., Moulane, Y., Manfroid, J., Vander Donckt, M., Pozuelos, F., Ferrais, M., & Hutsemekers, D. (01 January 2022). TRAPPIST comet production rates: 19P/Borrelly, 67P/C-G, 104P/Kowal 2, C/2019 L3 (ATLAS), and C/2021 A1 (Leonard). The Astronome's Telegram, 15186, 1.

Jehin, E., Moulane, Y., Manfroid, J., Vander Donckt, M., Pozuelos, F., Ferrais, M., & Hutsemekers, D. (01 January 2022). Outburst of comet C/2021 A1 (Leonard) on January 7, 2021. The Astronomer's Telegram, 15189, 1.

Jehin, E., Moulane, Y., Manfroid, J., Vander Donckt, M., Hmiddouch, S., Pozuelos, F., Ferrais, M., & Hutsemekers, D. (01 December 2021). TRAPPIST comet production rates: 6P/d'Arrest, 67P/C-G, 4P/Faye, 19P/Borrelly, 57P/D-N-D. The Astronomer's Telegram, 15117, 1.

Jehin, E., Moulane, Y., Manfroid, J., Pozuelos Romero, F. J., Ferrais, M., & Hutsemekers, D. (01 December 2020). 398P/Boattini a new JFC carbon-chain poor comet. The Astronomer's Telegram, 14251, 1.

Jehin, E., Moulane, Y., Manfroid, J., Pozuelos Romero, F. J., Ferrais, M., & Hutsemekers, D. (01 November 2020). TRAPPIST comet production rates: 88/Howell, C/2020 M3 (ATLAS), C/2020 S3 (Erasmus), 156P/Russell-LINEAR. The Astronomer's Telegram, 14174, 1.

Jehin, E., Moulane, Y., Manfroid, J., Pozuelos Romero, F. J., & Hutsemekers, D. (01 October 2020). TRAPPIST comet production rates: 88/Howell, C/2020 M3 (ATLAS), C/2020 S3 (Erasmus), 156P/Russell-LINEAR. The Astronomer's Telegram, 14101, 1.

Marin, F., Charlot, S., Agis-Gonzalez, B., Sluse, D., Hutsemekers, D., Labiano, A., Grosset, L., Neiner, C., & Bouret, J.-C. (2019). The role of Active Galactic Nuclei in galaxy evolution: insights from space ultraviolet spectropolarimetry. Bulletin of the American Astronomical Society.

Saviane, I., Piirola, V., Bagnulo, S., Monaco, L., Hutsemekers, D., Katajainen, S., Lehto, H., Vornanen, T., Berdyugin, A., & Hakala, P. (01 September 2007). Circular Polarimetry Now Offered at EFOSC2. The Messenger, 129, 14-17.

Lamy, H., & Hutsemekers, D. (01 September 1999). Erratum : A procedure for deriving accurate linear polarimetric measurements. The Messenger, 97, 23.

Lamy, H., & Hutsemekers, D. (1999). A procedure for deriving accurate linear polarimetric measurements. The Messenger, 96, 25-27.

Courbin, F., Hutsemekers, D., Meylan, G., Magain, P., & Djorgovski, S. G. (01 September 1996). PKS 1610-771: a highly reddened quasar? The Messenger, 85, 27-28.

Magain, P., Surdej, J., Vanderriest, C., Pirenne, B., & Hutsemekers, D. (March 1992). The new gravitational lens candidate Q 1208+1011 and the importance of high quality data. The Messenger, 67, 30-33.

Hutsemekers, D. (01 December 1991). Unusual solar halos over La Silla. The Messenger, 66, 18-20.

Jarvis, B., & Hutsemekers, D. (1989). A new and improved camera for the 1.5m B&C spectrograph. The Messenger, 56, 65.

Surdej, J., Arnaud, J., Borgeest, U., Djorgovski, S., Fleischmann, F., Hammer, F., Hutsemekers, D., Kayser, R., Le Fevre, O., Nottale, L., Magain, P., Meylan, G., Refsdal, S., Remy, M., Shaver, P., Smette, A., Swings, J.-P., Vanderriest, C., van Drom, E., ... Weigelt, G. (1989). Profiles of a Key Programme: Gravitational Lensing. The Messenger, 55, 8-12.

Hutsemekers, D. (1983). The UV spectrum of the Be star HD 50138. Be Star Newsletter, 8, 2.

Schipani, P., Covino, S., Snik, F., Colapietro, M., Perrotta, F., Savarese, S., Bagnulo, S., Bellutti, P., Capasso, G., Cappellaro, E., Cappi, M., Castignani, G., D'Orsi, S., Farinato, J., Hainaut, O., Hutsemekers, D., Kuijken, K., Magalhaes, A. M., Magrin, D., ... Verdoes-Kleijn, G. (2024). VSTPOL: making the VST a large survey telescope for optical polarimetry. In SPIE Proceedings Volume 13096, Ground-based and Airborne Instrumentation for Astronomy X (pp. 130967). International Society for Optical Engineering (SPIE). doi:10.1117/12.3019695

Mahy, L., Lanthermann, C., Gosset, E., Hutsemekers, D., Kluska, J., Lobel, A., Reggiani, M., & Sana, H. (2024). Multiplicity of Galactic Luminous Blue Variable stars. Proceedings of the International Astronomical Union. doi:10.1017/S1743921322002848

Jehin, E., Manfroid, J., & Hutsemekers, D. (01 October 2021). The discovery of Fe and Ni free atoms in comets atmospheres even far from the Sun. Bulletin of the American Astronomical Society, 53 (7), 105.06.

Opitom, C., Jehin, E., Hutsemekers, D., Shinnaka, Y., Manfroid, J., Rousselot, P., Raghuram, S., Fitzsimmons, A., Meech, K., Micheli, M., Snodgrass, C., Yang, B., & Hainaut, O. (01 October 2021). A surprising similarity to solar system comets from high resolution optical spectroscopy of 2I/Borisov. Bulletin of the American Astronomical Society, 53 (7), 505.02.

Hutsemekers, D., Manfroid, J., & Jehin, E. (2021). FeI and NiI in comets. In EPSC Abstracts Vol. 15, EPSC2021-89 (pp. 2021-89). European Planetary Science Congress 2021.

Opitom, C., Jehin, E., Hutsemekers, D., Shinnaka, Y., Manfroid, J., Rousselot, P., Raghuram, S., Kawakita, H., Fitzsimmons, A., Meech, K., Micheli, M., Snodgrass, C., Yang, B., & Hainaut, O. (2021). High resolution optical spectroscopy of 2I/Borisov: a surprising similarity to solar system comets. In EPSC Abstracts Vol. 15, EPSC2021-178 (pp. 2021-178).

Marin, F., Hutsemekers, D., & Agis-Gonzalez, B. (2019). Changing-look Seyfert galaxies with optical linear polarization measurements. In SF2A-2019: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics (pp. 509-513). France: French Society of Astronomy and Astrophysics.

Agis-Gonzalez, B., Hutsemekers, D., Acosta Pulido, J., & Ramos Almeida, C. (2019). TRUE2: Establishing a detectability limit on hidden broad line regions. In "Highlights on Spanish Astrophysics X, Proceedings of the XIII Scientific Meeting of the Spanish Astronomical Society" (ISBN 978-84-09-09331-1). Spain: Spanish Astronomical Society.

Marin, F., Charlot, S., Hutsemekers, D., Agis-Gonzalez, B., Sluse, D., Labiano, A., Grosset, L., Neiner, C., & Bouret, J.-C. (2018). Probing the structure and evolution of active galactic nuclei with the ultraviolet polarimeter POLLUX aboard LUVOIR. In SF2A-2018: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics (pp. 71-75). France: French Society of Astronomy and Astrophysics.

Jehin, E., Opitom, C., Hutsemekers, D., Rousselot, P., José Pozuelos Romero, F., Manfroid, J., & Moulane, Y. (01 October 2018). A high resolution spetrum of comet C/2016 R2 (PanSTARRS) with the ESO VLT. Bulletin of the American Astronomical Society, 50, 210.15.

Yang, B., Opitom, C., Jehin, E., Hutsemekers, D., Moulane, Y., Pozuelos Romero, F. J., & Hsieh, H. (01 October 2018). Comet 66P/du Toit: A Near Earth Main Belt Comet? Bulletin of the American Astronomical Society, 50, 210.09.

Opitom, C., Hutsemekers, D., Rousselot, P., Manfroid, J., & Jehin, E. (01 September 2018). High resolution spectroscopy of the unusual comet C/2016 R2 (PanSTARRS). EPSC Abstracts, 12, 220, pp. 1-2.

Smette, A., Bagnulo, S., Snik, F., Cox, N., Hainaut, O., Hutsemekers, D., & Magalhaes, A. M. (2018). VST: The First Large Survey Telescope for Optical Polarimetry. In VST in the Era of the Large Sky Surveys. Zenodo 1304780 (pp. 44). doi:10.5281/zenodo.1304780

Yang, B., Hutsemekers, D., Shinnaka, Y., Jehin, E., Meech, K. J., Opitom, C., Hainaut, O., Keane, J., & Manfroid, J. (01 October 2017). Isotopic Ratios in a Peculiar Outbursting Comet. Bulletin of the American Astronomical Society, 49, 305.01.

Kawakita, H., Shinnaka, Y., Jehin, E., Decock, A., Hutsemekers, D., & Manfroid, J. (01 October 2016). Survey for Ortho-to-Para Abundance Ratios (OPRs) of NH2 in Comets: Revisit to the Meaning of OPRs of Cometary Volatiles. Bulletin of the American Astronomical Society, 48, 330.05.

Rousselot, P., Jehin, E., Hutsemekers, D., Manfroid, J., Decock, A., & Bockelee-Morvan, D. (01 October 2016). The OD/OH Isotope Ratio in Comets 8P/Tuttle and C/2012 F6 (Lemmon). Bulletin of the American Astronomical Society, 48, 330.03.

Opitom, C., Jehin, E., Manfroid, J., Hutsemekers, D., Gillon, M., & Magain, P. (01 November 2015). Five years of comet narrow band photometry and imaging with TRAPPIST. Bulletin of the American Astronomical Society, 47, 506.02.

Shinnaka, Y., Kawakita, H., Jehin, E., Decock, A., Hutsemekers, D., Manfroid, J., & Arai, A. (01 November 2015). Nitrogen Isotopic Ratios in Cometary NH2: Implication for 15N-fractionation in Ammonia. Bulletin of the American Astronomical Society, 47, 415.16.

Jehin, E., Opitom, C., Manfroid, J., Hutsemekers, D., & Gillon, M. (01 November 2014). The TRAPPIST comet survey in 2014. Bulletin of the American Astronomical Society, 46, 209.21.

Opitom, C., Jehin, E., Manfroid, J., Hutsemekers, D., & Gillon, M. (01 November 2014). TRAPPIST monitoring of comet C/2013 A1 (Siding Spring). Bulletin of the American Astronomical Society, 46, 110.07.

Decock, A., Rousselot, P., Jehin, E., Hutsemekers, D., Manfroid, J., Bhardwaj, A., & Raghuram, S. (01 October 2013). Study of the Forbidden Oxygen Lines in Comets at Different Heliocentric and Nucleocentric Distances. Bulletin of the American Astronomical Society, 45, 502.08.

Rousselot, P., Pirali, O., Jehin, E., Vervloet, M., Hutsemekers, D., Manfroid, J., Cordier, D., Martin, M. A., Gruet, S., & Decock, A. (01 October 2013). A Search For 15NH2 Emission Lines In Comets. Bulletin of the American Astronomical Society, 45, 505.06.

Jehin, E., Gillon, M., Opitom, C., Manfroid, J., Hutsemekers, D., Delrez, L., & Magain, P. (13 September 2013). TRAPPIST (TRAnsiting Planets and PlanetesImals Small Telescope). EPSC Abstracts, 8, 968, pp. 1-2.

Decock, A., Jehin, E., Rousselot, P., Hutsemekers, D., & Manfroid, J. (12 September 2013). Study of the forbidden oxygen lines in comets at different heliocentric and nucleocentric distances. EPSC Abstracts, 8, 925, pp. 1-2.

Opitom, C., Jehin, E., Manfroid, J., Hutsemekers, D., Gillon, M., & Magain, P. (12 September 2013). TRAPPIST monitoring of comet C/2012 F6 (Lemmon). EPSC Abstracts, 8, 764, PP. 1-2.

Payez, A., Cudell, J.-R., & Hutsemekers, D. (2012). New constraints on very light pseudoscalars. In K. Zioutas (Ed.), 7th Patras Workshop on Axions, WIMPs and WISPs (pp. 147-150).

Rousselot, P., Pirali, O., Jehin, E., Vervloet, M., Hutsemekers, D., Manfroid, J., Martin-Drumel, M., Gruet, S., & Lobanova, M. (2012). A Search For 15NH2 Lines In Comet C/2002 T7 (LINEAR). Bulletin of the American Astronomical Society, 44, 314.14.

Sluse, D., Hutsemekers, D., Courbin, F., Meylan, G., & Wambsganss, J. (2012). Probing the inner structure of distant AGNs with gravitational lensing. In Proceedings of Nuclei of Seyfert galaxies and QSOs - Central engine & conditions of star formation. Proceedings of Science, PoS (Seyfert 2012) 057 (pp. 1-6).

Weiler, M., Bockelée-Morvan, D., Hutsemekers, D., Jehin, E., Manfroid, J., Muinonen, K., Oszkiewicz, D. A., Schulz, R., & Stuewe, J. (2012). The C2-hydrocarbon link in cometary comae. EPSC Abstracts, 492, pp. 1-2.

Gillon, M., Jehin, E., Magain, P., Chantry, V., Hutsemekers, D., Manfroid, J., Queloz, D., & Udry, S. (01 February 2011). TRAPPIST: a robotic telescope dedicated to the study of planetary systems. EPJ Web of Conferences, 11, 06002. doi:10.1051/epjconf/20101106002

Bockelee-Morvan, D., Swinyard, B., Vandenbussche, B., Hartogh, P., Jehin, E., Hutsemekers, D., Manfroid, J., Biver, N., de Val-Borro, M., Crovisier, J., Küppers, M., Lis, D. C., Rengel, M., & Szutowicz, S. (2011). Herschel PACS and SPIRE Observations of comet 103P/Hartley 2. EPSC Abstracts, 231, pp. 1-2.

Crovisier, J., Bockelée-Morvan, D., Biver, N., Hartogh, P., Hutsemekers, D., Jehin, E., Küppers, M., Lis, D. C., Manfroid, J., Rengel, M., Swinyard, B., Szutowicz, S., de Val-Borro, M., & Vandenbussche, B. (2011). Observations of the rotational lines of OH in comets with the Herschel Space Observatory. EPSC Abstracts, 436, pp. 1-2.

Decock, A., Jehin, E., Manfroid, J., & Hutsemekers, D. (2011). Study of the forbidden oxygen lines in a dozen comets observed at the VLT (ESO). EPSC Abstracts, 1126, pp. 1-2.

Jehin, E., Hutsemekers, D., Manfroid, J., Decock, A., Weiler, M., Kawakita, H., Shinnaka, Y., Hashimoto, M., Bockelée-Morvan, D., Biver, N., Crovisier, J., & Hartogh, P. (2011). A Multi-wavelength study with the ESO VLT of comet 103P/Hartley2 at the time of the EPOXI encounter. EPSC Abstracts, 1463, pp. 1-2.

Jehin, E., Manfroid, J., Hutsemekers, D., Gillon, M., & Magain, P. (2011). Long term photometric monitoring of comet 103P/Hartley2 with the new robotic TRAPPIST telescope. EPSC Abstracts, 1489, pp. 1-2.

Rousselot, P., Jehin, E., Manfroid, J., & Hutsemekers, D. (2011). 12C2/12C13C isotopic ratio in comets C/2001 Q4(NEAT) and C/2002 T7 (LINEAR). EPSC Abstracts, 602, pp. 1-2.

Bockelee-Morvan, D., Biver, N., Crovisier, J., de Val-Borro, M., Fulton, T., Hartogh, P., Hutsemekers, D., Jarchow, C., Jehin, E., Kidger, M., Kueppers, M., Lellouch, E., Lis, D., Manfroid, J., Moreno, R., Rengel, M., Swinyard, B. C., Szutowicz, S., Vandenbussche, B., & HssO, T. (01 October 2010). Comet 29P/Schwassmann-Wachmann Observed with the Herschel Space Observatory: Detection of Water Vapour and Dust Far-IR Thermal Emission. Bulletin of the American Astronomical Society, 42, 946.

Pasachoff, J. M., Elliot, J. L., Souza, S. P., Person, M. J., Zuluaga, C., Bosh, A. S., Zangari, A. M., Jensen-Clem, R., Lockhart, M., Gulbis, A. A. S., Rojo, P., Lu, M., Malamut, C., Levine, S. E., Ivarsen, K. M., Reichart, D. E., LaCluyze, A. P., Nysewander, M. C., Haislip, J. B., ... Queloz, D. (01 October 2010). The 3/4 July 2010 Pluto Stellar-Occultation Observations. Bulletin of the American Astronomical Society, 42, 983.

Shinnaka, Y., Kawakita, H., Kobayashi, H., Jehin, E., Manfroid, J., Hutsemekers, D., & Arpigny, C. (01 October 2010). OPRs of Ammonia versus 14N/15N Ratios in CN in 15 Comets. Bulletin of the American Astronomical Society, 42, 961.

Payez, A., Cudell, J.-R., & Hutsemekers, D. (2010). On the circular polarisation of light from axion-photon mixing. In J.-M. Alimi & A. Füzfa (Eds.), INVISIBLE UNIVERSE: Proceedings of the Conference. AIP Conference Proceedings 1241 (pp. 444-449). American Institute of Physics (AIP). doi:10.1063/1.3462669

Payez, A., Cudell, J.-R., & Hutsemekers, D. (2010). Axion-like particles and circular polarisation of active galactic nuclei. In J. Jaeckel, A. Lindner, ... J. Redondo (Eds.), Proceedings of the 5th Patras Workshop on Axions, WIMPs and WISPs PATRAS 2009 (pp. 133-136). Hamburg, Germany: Verlag Deutsches Elektronen-Synchrotron.

Payez, A., Hutsemekers, D., & Cudell, J.-R. (2010). Large-scale coherent orientations of quasar polarisation vectors: interpretation in terms of axion-like particles. AIP Conference Proceedings, 1274,. doi:10.1063/1.3489545

Shinnaka, Y., Jehin, E., Manfroid, J., Hutsemekers, D., Arpigny, C., Kanda, Y., Kobayashi, H., & Kawakita, H. (01 September 2009). Revisit to Nuclear Spin Temperature of Ammonia in Comets. Bulletin of the American Astronomical Society, 41, 15.12.

Kobayashi, H., Bockelee-Morvan, D., Dello Russo, N., Kawakita, H., Verback, R. J., Weaver, H., Jehin, E., Manfroid, J., Smette, A., Cochran, A., Hutsemekers, D., Schulz, R., Stuwe, J., Weiler, M., Zucconi, J.-M., Arpigny, C., Biver, N., Crovisier, J., Magain, P., ... Sana, H. (01 September 2008). High-dispersion Spectroscopic Observations Of 8P/Tuttle With VLT/CRIRES. Bulletin of the American Astronomical Society, 40, 05.04.

Sluse, D., Claeskens, J.-F., Hutsemekers, D., & Surdej, J. (2008). Microlensing probes the AGN structure of the lensed quasar J1131-1231. In E. Benítez, I. Cruz-González, ... Y. Krongold (Eds.), Revista Mexicana de Astronomia y Astrofisica (Serie de Conferencias) Vol. 32 (pp. 83-85).

Borguet, B., Hutsemekers, D., Letawe, G., Letawe, Y., & Magain, P. (2008). Quasar Host Orientation and Polarization: Insights into the Type 1/Type 2 Dichotomy. Revista Mexicana de Astronomía y Astrofísica, 32, 167-169.

Payez, A., Cudell, J.-R., & Hutsemekers, D. (2008). Axions and polarisation of quasars. AIP Conference Proceedings, 1038, 211-219. doi:10.1063/1.2987174

Arpigny, C., Cochran, A. L., Jehin, E., Manfroid, J., Hutsemekers, D., Zucconi, J.-M., Endl, M., Cochran, W. D., & Schulz, R. (01 May 2003). Anomalous 14N/15N ratio in comets 122P/1995 S1 (de Vico) and 153P/2002 C1 (Ikeya-Zhang). Bulletin of the American Astronomical Society, 35, 986.

Hutsemekers, D., & Lamy, H. (2002). The Polarization Properties of Broad Absorption Line QSOs: Observational Results. In Mass Outflow in Active Galactic Nuclei: New Perspectives. ASPC 255 (pp. 207-210).

Hutsemekers, D., & Lamy, H. (2002). Q0059-2735: A Hybrid Starburst/Broad Absorption Line QSO ? Clues from Spectropolarimetry. In Mass Outflow in Active Galactic Nuclei: New Perspectives. ASPC 255 (pp. 211-212).

Lamy, H., & Hutsemekers, D. (1999). Polarimetry and Spectropolarimetry of a Sample of Broad Absorption Line Quasars. In Structure and Kinematics of Quasar Broad Line Regions. ASPC 175 (pp. 125-129).

Rauer, H., Arpigny, C., Hutsemekers, D., Manfroid, J., Jorda, L., & Crovisier, J. (01 July 1997). On the Production and Kinematics of Sodium Atoms in the Head of Comet Hale-Bopp. Bulletin of the American Astronomical Society, 29, 1049.

Hutsemekers, D. (1997). Dust in LBV-type Nebulae. In Luminous Blue Variables: Massive Stars in Transition. ASPC 120 (pp. 316-321).

Lamy, H., Hutsemekers, D., & Rauw, G. (1996). Spectropolarimetry of WR66. In Wolf-Rayet stars in the framework of stellar evolution ; 33rd Liege International Astrophysical Coll (pp. 247-251).

Remy, M., Gosset, E., Hutsemekers, D., Revenaz, B., & Surdej, J. (1996). The Clover Leaf Quasar H1413+117: New Photometric Light Curves. Proceedings of the International Astronomical Union.

Rauw, G., Vreux, J.-M., Gosset, E., Hutsemekers, D., & Magain, P. (1995). WR22 as a core hydrogen-burning Wolf-Rayet star. In D. Fraipont-Caro, M. Gabriel, N. Grevesse, P. Demarque, ... A. Noels (Ed.), Stellar evolution: what should be done; 32nd Liege International Astrophysical Coll (pp. 463-467). Liège, Belgium: Institut d'Astrophysique.

Rauw, G., Vreux, J.-M., Gosset, E., Hutsemekers, D., Magain, P., Manfroid, J., Remy, M., & Rochowicz, K. (1995). A seven year campaign on WR 22. In Wolf-Rayet Stars: Binaries; Colliding Winds; Evolution. International Astronomical Union. Symposium no. 163 (pp. 241-242). Dordrecht, Unknown/unspecified: Springer.

Arnould, P., Remy, M., Gosset, E., Hainaut, O., Hutsemekers, D., Magain, P., Smette, A., Surdej, J., & van Drom, E. (1993). The cloverleaf quasar H1413+117: a preliminary light curve. In J. Surdej, D. Fraipont-Caro, E. Gosset, S. Refsdal, ... M. Remy (Eds.), The proceedings of the 31st Liège International Astrophysical Colloquium "Gravitational lenses in the Universe" (pp. 169-173). Liège, Belgium: ULg - Université de Liège.

Claeskens, J.-F., Crampton, D., Filippenko, A. V., Hutsemekers, D., Magain, P., Pirenne, B., Surdej, J., Vanderriest, C., & Yee, H. K. C. (1993). Search for gravitational lenses in a large sample of highly luminous quasars and statistical determination of cosmological parameters. In J. Surdej, D. Fraipont-Caro, E. Gosset, S. Resdal, ... M. Remy (Eds.), The proceedings of the 31st Liège International Astrophysical Colloquium "Gravitational lenses in the Universe" (pp. 263-265). Liège, Belgium: ULg - Université de Liège.

Daulie, G., Hainaut, O., Hutsemekers, D., Magain, P., Remy, M., Smette, A., Surdej, J., & van Drom, E. (1993). The relative photometric lightcurve of UM673 A&B. In J. Surdej, D. Fraipont-Caro, E. Gosset, S. Refsdal, ... M. Remy (Eds.), The proceedings of the 31st Liège International Astrophysical Colloquium "Gravitational lenses in (pp. 181-183). Liège, Belgium: ULg - Université de Liège.

Hutsemekers, D., Surdej, J., & van Drom, E. (1993). Can micro-lensing effects help to distinguish between the models for the BAL region of QSOs? In J. Surdej, D. Fraipont-Caro (Ed.), E. Gosset (Ed.), S. Refsdal (Ed.), ... M. Remy (Ed.), Liege International Astrophysical Colloquia, Gravitational Lenses in the Universe (pp. 453). Liege, Belgium: ULg - Université de Liège.

van Drom, E., Surdej, J., Magain, P., Hutsemekers, D., Gosset, E., Claeskens, J.-F., Shaver, P., & Melnick, J. (1993). Galaxies statistics around highly luminous quasars: the ESO Sample. In J. Surdej, D. Fraipont-Caro, E. Gosset, S. Refsdal, ... M. Remy (Eds.), The proceedings of the 31st Liège International Astrophysical Colloquium "Gravitational lenses in the Universe" (pp. 301-306). Liège, Belgium: ULg - Université de Liège.

Surdej, J., Angonin, M. C., Arnaud, J., Bauer, T., Borgeest, U., Hainaut, O., Hammer, F., Hutsemekers, D., Le Fevre, O., Nottale, L., Magain, P., Meylan, G., Remy, M., Shaver, P., Smette, A., Swings, J.-P., van Drom, E., Veron-Cetty, M., & Veron, P. (1992). ESO key programme, gravitational lensing: quasars and radio galaxies; a status report. In Distribution of Matter in the Universe (pp. 97-107). Paris, France: Meudon: Obs. de Paris.

Hutsemekers, D., Surdej, J., & Vandrom, E. (1992). Deformation of P Cygni line profiles by gravitational microlensing effects. In R. Kayser, T. Schramm, ... L. Nieser, Gravitational Lenses, Lecture Notes in Physics, volume 406 (pp. 373). Berlin, Germany: Springer-Verlag. doi:10.1007/3-540-55797-0_134

Surdej, J., Claeskens, J.-F., Crampton, D., Filippenko, A. V., Hutsemekers, D., Magain, P., Pirenne, B., Vanderriest, C., & Yee, H. K. C. (1992). Gravitational lensing statistics based on a large sample of highly luminous quasars observed with ground-based telescopes and HST. In P. Benvenuti & E. J. Schreier (Eds.), Proceedings of a ST-ECF/STScI Workshop "Science with the Hubble Space Telescope" (pp. 111-118). Garching near Munich, Germany: European Southern Observatory.

Samarasinha, N. H., A'Hearn, M. F., Weaver, H. A., Feldman, P. D., Arpigny, C., & Hutsemekers, D. (1991). A Model to Explain the Activity of Comet Levy (1990c). In Bulletin of the American Astronomical Society (pp. 1159-1159).

Hutsemekers, D., & Surdej, J. (1989). Revisited Mass-Loss Rates of Planetary Nebula Nuclei Observed with IUE. Proceedings of the International Astronomical Union.

Hutsemekers, D., & Surdej, J. (1986). Determination of mass-loss rates of planetary nebulae nuclei using the first order moment of P Cygni line profiles. In Comptes rendus sur les Journées de Strasbourg, 8ème réunion - Les Nébuleuses Planétaires (pp. 81-85).

Hutsemekers, D. (09 October 2023). Probing the quasar broad line region with microlensing [Paper presentation]. MASCA Multi-wavelength AGN Structure and Cosmological Applications, Nice, France.

Hutsemekers, D. (27 October 2021). Large-scale alignments of quasar polarization vectors. Observational evidence and possible implications for cosmology [Paper presentation]. A Discussion on the Cosmological Principle, Pohang, South Korea.

Hutsemekers, D. (16 September 2021). The discovery of iron and nickel atoms in cometary atmospheres even far from the Sun (Keynote Talk) [Paper presentation]. Europlanet Science Congress 2021.

Hubert, B., Munhoven, G., Moulane, Y., Hutsemekers, D., Manfroid, J., Opitom, C., Jehin, E., Aoki, S., Soret, L., Gkouvelis, L., & Gérard, J.-C. (01 April 2021). Abel transform of exponential functions for planetary and cometary atmospheres with application to observation of 46P/Wirtanen and to the OI 557.7 nm emission at Mars [Paper presentation]. The 23rd EGU General Assembly. doi:10.5194/egusphere-egu21-9244

Hutsemekers, D. (01 December 2020). Optical polarization of Active Galactic Nuclei (Review) [Paper presentation]. Towards a panchromatic understanding of the polarization of Active Galactic Nuclei. AGN and polarimetry conference, Strasbourg, France.

Jehin, E., Opitom, C., Hutsemekers, D., Rousselot, P., Moulane, Y., Pozuelos Romero, F. J., Manfroid, J., Fitzimmons, A., Gibson, C., & Snodgrass, C. (01 September 2019). The unique spectrum of comet C/2016 R2 (PanSTARRS) [Paper presentation]. EPSC-DPS Joint Meeting 2019, Geneva, Switzerland.

Opitom, C., Hutsemekers, D., Manfroid, J., Jehin, E., Rousselot, P., Yang, B., & Moulane, Y. (01 September 2019). VLT multi-instrument observations of comet 46P/Wirtanen [Paper presentation]. EPSC-DPS Joint Meeting 2019, Geneva, Switzerland.

Rousselot, P., Jehin, E., Curti, M., Hutsemekers, D., Opitom, C., Manfroid, J., & Moulane, Y. (01 September 2019). Modeling of the CO+ emission spectrum in comet C/2016 R2 (PanSTARRS) [Paper presentation]. EPSC-DPS Joint Meeting 2019, Geneva, Switzerland.

Hutsemekers, D., Agis-Gonzalez, B., Sluse, D., Ramos Almeida, C., Acosta Pulido, J., & Marin, F. (11 December 2018). lnsight on quasar changing-look physics from optical polarimetry [Paper presentation]. TORUS 2018. The many faces of the AGN obscuration, Puerto Varas, Chile.

Moustakas, L., O'Dowd, M., Anguita, T., Webster, R., Chartas, G., Cornachione, M., Dai, X., Fian, C., Hutsemekers, D., Jimenez-Vicente, J., Labrie, K., Lewis, G., Macleod, C., Mediavilla, E., Morgan, C. W., Motta, V., Nierenberg, A., Pooley, D., Rojas, K., ... Yong, S. Y. (2019). Quasar Microlensing: Revolutionizing our Understanding of Quasar Structure and Dynamics. ORBi-University of Liège. https://orbi.uliege.be/handle/2268/236312.