A&A 631, A107 (2019) Astronomy https://doi.org/10.1051/0004-6361/201732454 & © ESO 2019 Astrophysics Orbital and spectral analysis of the benchmark brown dwarf HD 4747B? S. Peretti1, D. Ségransan1, B. Lavie1, S. Desidera2, A.-L. Maire3, V. D’Orazi2, A. Vigan4, J.-L. Baudino5,6, A. Cheetham1, M. Janson3,7, G. Chauvin8, J. Hagelberg8, F. Menard8, Kevin Heng9, S. Udry1, A. Boccaletti5, S. Daemgen11, H. Le Coroller4, D. Mesa2, D. Rouan5, M. Samland3, T. Schmidt5, A. Zurlo4,17,18, M. Bonnefoy8, M. Feldt3, R. Gratton2, A.-M. Lagrange8, M. Langlois4,13, M. Meyer11,14, M. Carbillet10, M. Carle4, V. De Caprio12, L. Gluck8, E. Hugot4, Y. Magnard8, T. Moulin8, A. Pavlov3, J. Pragt15, P. Rabou8, J. Ramos3, G. Rousset5, A. Sevin5, C. Soenke16, E. Stadler8, L. Weber1, and F. Wildi 1 1 Observatoire astronomique de l’Université de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland e-mail:
[email protected] 2 INAF – Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122 Padova, Italy 3 Max Planck Institute for Astronomy, Koenigstuhl 17 69117 Heidelberg, Germany 4 Laboratoire d’Astrophysique de Marseille, 38, rue Frédéric Joliot-Curie 13388 Marseille cedex 13, France 5 LESIA, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC University of Paris 06, Université Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, 92195 Meudon, France 6 Department of Physics, University of Oxford, Oxford, UK 7 Department of Astronomy, Stockholm University, AlbaNova University Center, 106 91 Stockholm, Sweden