[en] In this communication, we report on the results of the second phase of the Exoplanet Imaging Data Challenge started in 2019. This second phase focuses on the characterization of point sources (exoplanet signals) within multispectral high-contrast images from ground-based telescopes. We collected eight data sets from two high-contrast integral field spectrographs (namely Gemini-S/GPI and VLT/SPHERE-IFS) that we calibrated homogeneously and in which we injected a handful of synthetic planetary signals (ground truth) to be characterized by the data challenge participants. The tasks of the participants consist of (1) extracting the precise astrometry of each injected planetary signals, and (2) extracting the precise spectro-photometry of each injected planetary signal. Additionally, the participants may provide the 1-sigma uncertainties on their estimation for further analyses. When available, the participants can also provide the posterior distribution used to estimate the position/spectrum and uncertainties. The data are permanently available on a Zenodo repository and the participants can submit their results through the EvalAI platform. The EvalAI submission platform opened on April 2022 and closed on the 31st of May 2024. In total, we received 4 valid submissions for the astrometry estimation and 4 valid submissions for the spectrophotometry (each submission, corresponding to one pipeline, has been submitted by a unique participant). In this communication, we present an analysis and interpretation of the results.
Research Center/Unit :
STAR - Space sciences, Technologies and Astrophysics Research - ULiège
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Cantalloube, F.; Institute de Planetologie et d'Astrophysique de Grenoble
Christiaens, Valentin ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Planetary & Stellar systems Imaging Laboratory
Cantero, C.; University of Geneva, Switzerland
Cioppa, Anthony ; Université de Liège - ULiège > Montefiore Institute of Electrical Engineering and Computer Science
Nasedkin, E.; Max-Planck-Institute for Astronomy, Heidelberg
Absil, Olivier ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO)
Delorme, P.; Institute de Planetologie et d'Astrophysique de Grenoble
Wang, J. -J.; Northwestern University
Bonse, J. M.; Eidgenossische Technische Hochschule, Zurich, Switzerland
Daglayan, H.; UCLouvain (Belgium)
Dahlqvist, C. -H.; University of Liege, Belgium
Guyot, Nathan ; Université de Liège - ULiège > Faculté des Sciences > Doct. scienc. (sciences spatiales)
Juillard, Sandrine ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Planetary & Stellar systems Imaging Laboratory
Mazoyer, J.; Observatoire de Paris, Laboratoire d'Etudes Spatiales et d'Instrumentation en Astrophysique
Samland, M.; Max-Planck-Institute for Astronomy, Heidelberg
Sabalbal, Mariam ; Université de Liège - ULiège > Unités de recherche interfacultaires > Space sciences, Technologies and Astrophysics Research (STAR)
Ruffio, J. -B.; University of California, San Diego
Van Droogenbroeck, Marc ; Université de Liège - ULiège > Département d'électricité, électronique et informatique (Institut Montefiore) > Télécommunications
ERC - European Research Council ULiège. ARC - Université de Liège. Actions de Recherche Concertées F.R.S.-FNRS - Fonds de la Recherche Scientifique BELSPO - Belgian Federal Science Policy Office European Union
Commentary :
Copyright 2024 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. https://www.spiedigitallibrary.org/conference-proceedings-of-spie/13097/3020278/Exoplanet-imaging-data-challenge-phase-II--comparison-of-algorithms/10.1117/12.3020278.short
Cantalloube, F., Farley, O. J., Milli, J., Bharmal, N., Brandner, W., Correia, C., Dohlen, K., Henning, T., Osborn, J., Por, E., et al., “Wind-driven halo in high-contrast images-i. analysis of the focal-plane images of sphere,” Astronomy & Astrophysics 638, A98 (2020).
Sauvage, J.-F., Fusco, T., Lamb, M., Girard, J., Brinkmann, M., Guesalaga, A., Wizinowich, P., O’Neal, J., N’Diaye, M., Vigan, A., et al., “Tackling down the low wind effect on sphere instrument,” in [Adaptive Optics Systems V], 9909, 408–416, SPIE (2016).
Vigan, A., Dohlen, K., N’diaye, M., Cantalloube, F., Girard, J., Milli, J., Sauvage, J.-F., Wahhaj, Z., Zins, G., Beuzit, J.-L., et al., “Calibration of quasi-static aberrations in exoplanet direct-imaging instruments with a zernike phase-mask sensor-iv. temporal stability of non-common path aberrations in vlt/sphere,” Astronomy & Astrophysics 660, A140 (2022).
Cantalloube, F., Dohlen, K., Milli, J., Brandner, W., and Vigan, A., “Peering through SPHERE Images: A Glance at Contrast Limitations,” The Messenger 176, 25–31 (June 2019).
Cantalloube, F., Gomez-Gonzalez, C., Absil, O., Cantero, C., Bacher, R., Bonse, M., Bottom, M., Dahlqvist, C.-H., Desgrange, C., Flasseur, O., et al., “Exoplanet imaging data challenge: benchmarking the various image processing methods for exoplanet detection,” in [Adaptive Optics Systems VII], 11448, 1027–1062, SPIE (2020).
Cantalloube, F., Christiaens, V., Cantero, C., Nasedkin, E., Cioppa, A., Absil, O., Bonse, J., Delorme, P., Gomez-Gonzalez, C., Juillard, S., et al., “Exoplanet imaging data challenge, phase ii: characterization of exoplanet signals in high-contract images,” in [Adaptive Optics Systems VIII], 12185, 8–24, SPIE (2022).
Nielsen, E. L., De Rosa, R. J., Macintosh, B., Wang, J. J., Ruffio, J.-B., Chiang, E., Marley, M. S., Saumon, D., Savransky, D., Ammons, S. M., et al., “The gemini planet imager exoplanet survey: giant planet and brown dwarf demographics from 10 to 100 au,” The Astronomical Journal 158(1), 13 (2019).
Vigan, A., Fontanive, C., Meyer, M., Biller, B., Bonavita, M., Feldt, M., Desidera, S., Marleau, G.-D., Emsenhuber, A., Galicher, R., et al., “The sphere infrared survey for exoplanets (shine)-iii. the demographics of young giant exoplanets below 300 au with sphere,” Astronomy & Astrophysics 651, A72 (2021).
Marois, C., Lafrenière, D., Doyon, R., Macintosh, B., and Nadeau, D., “Angular Differential Imaging: A Powerful High-Contrast Imaging Technique,” 641, 556–564 (Apr. 2006).
Lafreniere, D., Marois, C., Doyon, R., Nadeau, D., and Artigau, É., “A new algorithm for point-spread function subtraction in high-contrast imaging: a demonstration with angular differential imaging,” The Astrophysical Journal 660(1), 770 (2007).
Marois, C., Zuckerman, B., Konopacky, Q. M., Macintosh, B., and Barman, T., “Images of a fourth planet orbiting hr 8799,” Nature 468(7327), 1080–1083 (2010).
Lagrange, A.-M., Bonnefoy, M., Chauvin, G., Apai, D., Ehrenreich, D., Boccaletti, A., Gratadour, D., Rouan, D., Mouillet, D., Lacour, S., et al., “A giant planet imaged in the disk of the young star β pictoris,” Science 329(5987), 57–59 (2010).
Mugnier, L. M., Cornia, A., Sauvage, J.-F., Rousset, G., Fusco, T., and Védrenne, N., “Optimal method for exoplanet detection by angular differential imaging,” Journal of the Optical Society of America A 26, 1326 (May 2009).
Pueyo, L., “Detection and characterization of exoplanets using projections on karhunen–loeve eigenimages: Forward modeling,” The Astrophysical Journal 824(2), 117 (2016).
Flasseur, O., Denis, L., Thiébaut, E., and Langlois, M., “An unsupervised patch-based approach for exoplanet detection by direct imaging,” in [2018 25th IEEE international conference on image processing (ICIP)], 2735–2739, IEEE (2018).
Christiaens et al., V., “Special: A python package for the spectral characterization of directly imaged low-mass companions,” subm. to JOSS (2022).
Cantalloube, F., Mouillet, D., Mugnier, L., Milli, J., Absil, O., Gonzalez, C. G., Chauvin, G., Beuzit, J.-L., and Cornia, A., “Direct exoplanet detection and characterization using the andromeda method: Performance on vlt/naco data,” Astronomy & Astrophysics 582, A89 (2015).
Dahlqvist, C.-H., Cantalloube, F., and Absil, O., “Regime-switching model detection map for direct exoplanet detection in adi sequences,” Astronomy & Astrophysics 633, A95 (2020).
Dahlqvist, C.-H., Louppe, G., and Absil, O., “Improving the rsm map exoplanet detection algorithm-psf forward modelling and optimal selection of psf subtraction techniques,” Astronomy & Astrophysics 646, A49 (2021).
Soummer, R., Pueyo, L., and Larkin, J., “Detection and Characterization of Exoplanets and Disks Using Projections on Karhunen-Loève Eigenimages,” 755, L28 (Aug. 2012).
Wang, J. J., Ruffio, J.-B., De Rosa, R. J., Aguilar, J., Wolff, S. G., and Pueyo, L., “pyKLIP: PSF Subtraction for Exoplanets and Disks.” Astrophysics Source Code Library, record ascl:1506.001 (June 2015).
Pueyo, L., “Detection and characterization of exoplanets using projections on karhunen–loeve eigenimages: Forward modeling,” The Astrophysical Journal 824(2), 117 (2016).
Daglayan Sevim, H., Vary, S., and Absil, P.-A., “An alternating minimization algorithm with trajectory for direct exoplanet detection,” in [ESANN 2023-European Symposium on Artificial Neural Networks, Computational Intelligence and Machine Learning], (2023).
Cantalloube, F., Christiaens, V., Cantero, C., Nasedkin, E., Cioppa, A., Absil, O., Bonse, J., Delorme, P., Gomez-Gonzalez, C., Juillard, S., et al., “Exoplanet imaging data challenge, phase ii: characterization of exoplanet signals in high-contrast images,” in [Adaptive Optics Systems VIII], 12185, 8–24, SPIE (2022).
Macintosh, B. A., Graham, J. R., Palmer, D. W., Doyon, R., Dunn, J., Gavel, D. T., Larkin, J., Oppenheimer, B., Saddlemyer, L., Sivaramakrishnan, A., Wallace, J. K., Bauman, B., Erickson, D. A., Marois, C., Poyneer, L. A., and Soummer, R., “The Gemini Planet Imager: from science to design to construction,” in [Adaptive Optics Systems], 7015, 701518 (July 2008).
Beuzit, J. L., Vigan, A., Mouillet, D., Dohlen, K., Gratton, R., Boccaletti, A., Sauvage, J. F., Schmid, H. M., Langlois, M., Petit, C., Baruffolo, A., Feldt, M., Milli, J., Wahhaj, Z., Abe, L., Anselmi, U., Antichi, J., Barette, R., Baudrand, J., Baudoz, P., Bazzon, A., Bernardi, P., Blanchard, P., Brast, R., Bruno, P., Buey, T., Carbillet, M., Carle, M., Cascone, E., Chapron, F., Charton, J., Chauvin, G., Claudi, R., Costille, A., De Caprio, V., de Boer, J., Delboulbé, A., Desidera, S., Dominik, C., Downing, M., Dupuis, O., Fabron, C., Fantinel, D., Farisato, G., Feautrier, P., Fedrigo, E., Fusco, T., Gigan, P., Ginski, C., Girard, J., Giro, E., Gisler, D., Gluck, L., Gry, C., Henning, T., Hubin, N., Hugot, E., Incorvaia, S., Jaquet, M., Kasper, M., Lagadec, E., Lagrange, A. M., Le Coroller, H., Le Mignant, D., Le Ruyet, B., Lessio, G., Lizon, J. L., Llored, M., Lundin, L., Madec, F., Magnard, Y., Marteaud, M., Martinez, P., Maurel, D., Ménard, F., Mesa, D., Möller-Nilsson, O., Moulin, T., Moutou, C., Origné, A., Parisot, J., Pavlov, A., Perret, D., Pragt, J., Puget, P., Rabou, P., Ramos, J., Reess, J. M., Rigal, F., Rochat, S., Roelfsema, R., Rousset, G., Roux, A., Saisse, M., Salasnich, B., Santambrogio, E., Scuderi, S., Segransan, D., Sevin, A., Siebenmorgen, R., Soenke, C., Stadler, E., Suarez, M., Tiphène, D., Turatto, M., Udry, S., Vakili, F., Waters, L. B. F. M., Weber, L., Wildi, F., Zins, G., and Zurlo, A., “SPHERE: the exoplanet imager for the Very Large Telescope,” 631, A155 (Nov 2019).
Nasedkin, E., Mollière, P., Wang, J., Cantalloube, F., Kreidberg, L., Pueyo, L., Stolker, T., and Vigan, A., “Impacts of high-contrast image processing on atmospheric retrievals,” Astronomy & Astrophysics 678, A41 (2023).
