[en] Context. Direct imaging of debris discs gives important information about their nature, their global morphology, and allows us to identify specific structures possibly in connection with the presence of gravitational perturbers. It is the most straightforward technique to observe planetary systems as a whole. <BR /> Aims: We present the first resolved images of the debris disc around the young F-type star HD 160305, detected in scattered light using the VLT/SPHERE instrument in the near infrared. <BR /> Methods: We used a post-processing method based on angular differential imaging and synthetic images of debris discs produced with a disc modelling code (GRaTer) to constrain the main characteristics of the disc around HD 160305. All of the point sources in the field of the IRDIS camera were analysed with an astrometric tool to determine whether they are bound objects or background stars. <BR /> Results: We detect a very inclined ( 82°) ring-like debris disc located at a stellocentric distance of about 86 au (deprojected width 27 au). The disc displays a brightness asymmetry between the two sides of the major axis, as can be expected from scattering properties of dust grains. We derive an anisotropic scattering factor g > 0.5. A second right-left asymmetry is also observed with respect to the minor axis. We measure a surface brightness ratio of 0.73 ± 0.18 between the bright and the faint sides. Because of the low signal-to-noise ratio (S/N) of the images we cannot easily discriminate between several possible explanations for this left-right asymmetry, such as perturbations by an unseen planet, the aftermath of the breakup of a massive planetesimal, or the pericenter glow effect due to an eccentric ring. Two epochs of observations allow us to reject the companionship hypothesis for the 15 point sources present in the field. <P />The reduced images (FITS files) are only available at the CDS via anonymous ftp to <A href="http://cdsarc.u-strasbg.fr">http://cdsarc.u-strasbg.fr</A> (ftp://130.79.128.5) or via <A href="http://cdsarc.u-strasbg.fr/viz- bin/qcat?J/A+A/626/A95">http://cdsarc.u-strasbg.fr/viz- bin/qcat?J/A+A/626/A95</A>Based on observations made with ESO Telescopes at the Paranal Observatory under programs ID 95.C-0298 and 97.C-0865.Note to the reader: The name of the author "Jean-Charles Ausgereau" was a mistake and has been corrected in "Jean-Charles Augereau" on 3 July 2019.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Perrot, Clément; LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, 92195, Meudon, France ; Instituto de Física y Astronomía, Facultad de Ciencias, Universidad de Valparaíso, Av. Gran Bretaña 1111, Valparaíso, Chile ; Núcleo Milenio Formación Planetaria - NPF, Universidad de Valparaíso, Av. Gran Bretaña 1111, Valparaíso, Chile
Thebault, Philippe; LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, 92195, Meudon, France
Lagrange, Anne-Marie; CNRS, IPAG, Université Grenoble Alpes, 38000, Grenoble, France
Boccaletti, Anthony; LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, 92195, Meudon, France
Vigan, Arthur; CNRS, CNES, LAM, Aix-Marseille University, Marseille, France
Augereau, Jean-Charles; CNRS, IPAG, Université Grenoble Alpes, 38000, Grenoble, France
Bonnefoy, Mickael; CNRS, IPAG, Université Grenoble Alpes, 38000, Grenoble, France
Choquet, Élodie; CNRS, CNES, LAM, Aix-Marseille University, Marseille, France
Kral, Quentin; LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, 92195, Meudon, France
Loh, Alan; LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, 92195, Meudon, France
Maire, Anne-Lise ; STAR Institute, University of Liège, Allée du Six Août 19c, B-4000 Liège, Belgium ; Max Planck Institute for Astronomy, Königstuhl 17, 69117, Heidelberg, Germany
Ménard, François; CNRS, IPAG, Université Grenoble Alpes, 38000, Grenoble, France
Messina, Sergio; INAF - Osservatorio Astrofisico di Catania, Via S.Sofia 78, 95123, Catania, Italy
Olofsson, Johan; Max Planck Institute for Astronomy, Königstuhl 17, 69117, Heidelberg, Germany ; Instituto de Física y Astronomía, Facultad de Ciencias, Universidad de Valparaíso, Av. Gran Bretaña 1111, Valparaíso, Chile ; Núcleo Milenio Formación Planetaria - NPF, Universidad de Valparaíso, Av. Gran Bretaña 1111, Valparaíso, Chile
Biller, Beth; Institute for Astronomy, University of Edinburgh, EH9 3HJ, Edinburgh, UK ; Max Planck Institute for Astronomy, Königstuhl 17, 69117, Heidelberg, Germany
Brandner, Wolfgang; Max Planck Institute for Astronomy, Königstuhl 17, 69117, Heidelberg, Germany
Buenzli, Esther; Max Planck Institute for Astronomy, Königstuhl 17, 69117, Heidelberg, Germany ; Institute for Particle Physics and Astrophysics, ETH Zurich, Wolfgang-Pauli-Strasse 27, 8093, Zurich, Switzerland
Chauvin, Gaël; CNRS, IPAG, Université Grenoble Alpes, 38000, Grenoble, France ; Unidad Mixta Internacional Franco-Chilena de Astronomía, CNRS/INSU UMI 3386 and Departamento de Astronomía, Universidad de Chile, Casilla 36-D, Santiago, Chile
Cheetham, Anthony; Geneva Observatory, University of Geneva, Chemin des Mailettes 51, 1290, Versoix, Switzerland
Daemgen, Sebastien; Institute for Particle Physics and Astrophysics, ETH Zurich, Wolfgang-Pauli-Strasse 27, 8093, Zurich, Switzerland
Delorme, Philippe; CNRS, IPAG, Université Grenoble Alpes, 38000, Grenoble, France
Feldt, Markus; CNRS, IPAG, Université Grenoble Alpes, 38000, Grenoble, France
Lagadec, Eric; Université Côte d'Azur, OCA, CNRS, Lagrange, France
Langlois, Maud; CRAL, CNRS, Université Lyon 1, ENS, 9 avenue Charles André, 69561, Saint Genis Laval, France ; CNRS, CNES, LAM, Aix-Marseille University, Marseille, France
Lannier, Justine; CNRS, IPAG, Université Grenoble Alpes, 38000, Grenoble, France
Mesa, Dino; INCT, Universidad De Atacama, calle Copayapu 485, Copiapò, Atacama, Chile ; INAF - Osservatorio Astronomico di Padova, Vicolo dell Osservatorio 5, 35122, Padova, Italy
Mouillet, David; CNRS, IPAG, Université Grenoble Alpes, 38000, Grenoble, France
Peretti, Sébastien; Geneva Observatory, University of Geneva, Chemin des Mailettes 51, 1290, Versoix, Switzerland
Janin-Potiron, Pierre; CNRS, IPAG, Université Grenoble Alpes, 38000, Grenoble, France
Salter, Graeme; CNRS, CNES, LAM, Aix-Marseille University, Marseille, France
Roux, Alain; CNRS, IPAG, Université Grenoble Alpes, 38000, Grenoble, France
Llored, Marc; CNRS, CNES, LAM, Aix-Marseille University, Marseille, France
Buey, Jean-Tristan; LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, 92195, Meudon, France
Pavlov, Alexei; Max Planck Institute for Astronomy, Königstuhl 17, 69117, Heidelberg, Germany
Weber, Luc; Geneva Observatory, University of Geneva, Chemin des Mailettes 51, 1290, Versoix, Switzerland
Petit, Cyril; DOTA, ONERA, Université Paris Saclay, 91123, Palaiseau, France)
Augereau, J. C., Lagrange, A. M., Mouillet, D., Papaloizou, J. C. B., & Grorod, P. A. 1999, A&A, 348, 557
Augereau, J. C., Nelson, R. P., Lagrange, A. M., Papaloizou, J. C. B., & Mouillet, D. 2001, A&A, 370, 447
Baraffe, I., Homeier, D., Allard, F., & Chabrier, G. 2015, A&A, 577, A42
Bell, C. P. M., Mamajek, E. E., & Naylor, T. 2015, MNRAS, 454, 593
Beuzit, J.-L., Vigan, A., Mouillet, D., et al. 2019, A&A, submitted [arXiv:1902.04080]
Boccaletti, A., Thalmann, C., Lagrange, A.-M., et al. 2015, Nature, 526, 230
Boccaletti, A., Sezestre, E., Lagrange, A.-M., et al. 2018, A&A, 614, A52
Bonnefoy, M., Perraut, K., Lagrange, A.-M., et al. 2018, A&A, 618, A63
Chauvin, G., Desidera, S., Lagrange, A.-M., et al. 2017, in SF2A-2017: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics, eds. C. Reylé, P. Di Matteo, F. Herpin, et al., 331
Choquet, É., Perrin, M. D., Chen, C. H., et al. 2016, ApJ, 817, L2
Claudi, R. U., Turatto, M., Gratton, R. G., et al. 2008, in Ground-based and Airborne Instrumentation for Astronomy II, Proc. SPIE, 7014, 70143E
Delorme, P., Meunier, N., Albert, D., et al. 2017, in SF2A-2017: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics, eds. C. Reylé, P. Di Matteo, F. Herpin, et al., 347
Dohlen, K., Langlois, M., Saisse, M., et al. 2008, in Ground-based and Airborne Instrumentation for Astronomy II, Proc. SPIE, 7014, 70143L
Feldt, M., Olofsson, J., Boccaletti, A., et al. 2017, A&A, 601, A7
Gagné, J., Mamajek, E. E., Malo, L., et al. 2018, ApJ, 856, 23
Gaia Collaboration (Brown, A. G. A., et al.) 2018, A&A, 616, A1
Galicher, R., Boccaletti, A., Mesa, D., et al. 2018, A&A, 615, A92
Hines, D. C., Schneider, G., Hollenbach, D., et al. 2007, ApJ, 671, L165
Hughes, A. M., Duchêne, G., & Matthews, B. C. 2018, ARA&A, 56, 541
Jackson, A. P., Wyatt, M. C., Bonsor, A., & Veras, D. 2014, MNRAS, 440, 3757
Kalas, P., Graham, J. R., & Clampin, M. 2005, Nature, 435, 1067
Kalas, P., Fitzgerald, M. P., & Graham, J. R. 2007, ApJ, 661, L85
Kalas, P., Graham, J. R., Chiang, E., et al. 2008, Science, 322, 1345
Kalas, P. G., Rajan, A., Wang, J. J., et al. 2015, ApJ, 814, 32
Kiraga, M. 2012, Acta Astron., 62, 67
Kiss, L. L., Moór, A., Szalai, T., et al. 2011, MNRAS, 411, 117
Kral, Q., Thébault, P., Augereau, J.-C., Boccaletti, A., & Charnoz, S. 2015, A&A, 573, A39
Kral, Q., Marino, S., Wyatt, M. C., Kama, M., & Matra, L. 2019, MNRAS, accepted [arXiv:1811.08439]
Kuchner, M. J., & Holman, M. J. 2003, ApJ, 588, 1110
Lagrange, A.-M., Bonnefoy, M., Chauvin, G., et al. 2010, Science, 329, 57
Lagrange, A.-M., Langlois, M., Gratton, R., et al. 2016, A&A, 586, L8
Langlois, M., Vigan, A., Moutou, C., et al. 2013, in Proceedings of the Third AO4ELT Conference, eds. S. Esposito, & L. Fini, 63
Langlois, M., Vigan, A., Dohlen, K., et al. 2014, in Ground-based and Airborne Instrumentation for Astronomy V, Proc. SPIE, 9147, 91479P
Lee, E. J., & Chiang, E. 2016, ApJ, 827, 125
Lee, J., & Song, I. 2018, MNRAS, 475, 2955
Lyra, W., & Kuchner, M. 2013, Nature, 499, 184
Macintosh, B., Graham, J. R., Ingraham, P., et al. 2014, Proc. Natl. Acad. Sci., 111, 12661
Maire, A.-L., Langlois, M., Dohlen, K., et al. 2016, in Ground-based and Airborne Instrumentation for Astronomy VI, Proc. SPIE, 9908, 990834
Malo, L., Doyon, R., Lafrenière, D., et al. 2013, ApJ, 762, 88
Mamajek, E. E., & Bell, C. P. M. 2014, MNRAS, 445, 2169
Marois, C., Lafrenière, D., Doyon, R., Macintosh, B., & Nadeau, D. 2006, ApJ, 641, 556
Marois, C., Correia, C., Galicher, R., et al. 2014, in Adaptive Optics, Proc. SPIE, 9148, 91480U
Mesa, D., Gratton, R., Zurlo, A., et al. 2015, A&A, 576, A121
Messina, S., Millward, M., Buccino, A., et al. 2017, A&A, 600, A83
Milli, J., Mouillet, D., Lagrange, A.-M., et al. 2012, A&A, 545, A111
Milli, J., Vigan, A., Mouillet, D., et al. 2017, A&A, 599, A108
Moór, A., Henning, T., Juhász, A., et al. 2015, ApJ, 814, 42
Moór, A., Kóspál, Á., Ábrahám, P., et al. 2016, ApJ, 826, 123
Mouillet, D., Larwood, J. D., Papaloizou, J. C. B., & Lagrange, A. M. 1997, MNRAS, 292, 896
Neuhäuser, R., Hohle, M. M., Ginski, C., et al. 2015, MNRAS, 448, 376
Olofsson, J., Samland, M., Avenhaus, H., et al. 2016, A&A, 591, A108
Pavlov, A., Feldt, M., & Henning, T. 2008, in Astronomical Data Analysis Software and Systems XVII, eds. R. W. Argyle, P. S. Bunclark, & J. R. Lewis, ASP Conf. Ser., 394, 581
Pawellek, N., & Krivov, A. V. 2015, MNRAS, 454, 3207
Pecaut, M. J., & Mamajek, E. E. 2013, ApJS, 208, 9
Pecaut, M. J., & Mamajek, E. E. 2016, MNRAS, 461, 794
Perrot, C., Boccaletti, A., Pantin, E., et al. 2016, A&A, 590, L7
Poppenhaeger, K., Auchettl, K., & Wolk, S. J. 2017, MNRAS, 468, 4018
Reche, R., Beust, H., Augereau, J.-C., & Absil, O. 2008, A&A, 480, 551
Richert, A. J. W., Getman, K. V., Feigelson, E. D., et al. 2018, MNRAS, 477, 5191
Robin, A. C., Reylé, C., Derrière, S., & Picaud, S. 2003, A&A, 409, 523
Schneider, A. 2013, Ph.D. Thesis, University of Georgia, USA
Schneider, G., Smith, B. A., Becklin, E. E., et al. 1999, ApJ, 513, L127
Sissa, E., Olofsson, J., Vigan, A., et al. 2018, A&A, 613, L6
Smith, W. H. 1987, PASP, 99, 1344
Song, I., Zuckerman, B., & Bessell, M. S. 2012, AJ, 144, 8
Soummer, R., Pueyo, L., & Larkin, J. 2012, ApJ, 755, L28
Strubbe, L. E., & Chiang, E. I. 2006, ApJ, 648, 652
