Transiting exoplanets from the CoRoT space mission{star}. XXVIII. CoRoT-33b, an object in the brown dwarf desert with 2:3 commensurability with its host star

Autor: Sz. Csizmadia, Aviv Ofir, Artie P. Hatzes, S. Carpano, Aldo S. Bonomo, Tsevi Mazeh, Laszlo Szabados, E. W. Guenther, M. Ollivier, Alexandre Santerne, J. M. Almenara, Guillaume Hébrard, Anders Erikson, Pascal Bordé, Davide Gandolfi, Sylvio Ferraz-Mello, Roi Alonso, Rodrigo F. Díaz, Malcolm Fridlund, Hannu Parviainen, J. Schneider, S. Grziwa, P. Klagyivik, Annie Baglin, Martin Pätzold, Juan Cabrera, François Bouchy, Hans-Jörg Deeg, Daniel Rouan, Magali Deleuil, M. Tadeu dos Santos, G. Wuchterl, Heike Rauer, Suzanne Aigrain, Tristan Guillot
Přispěvatelé: Thüringer Landessternwarte Tautenburg (TLS), Department of Brain and Behavioural Sciences, University of Pavia, Research and Scientific Support Department, ESTEC (RSSD), European Space Research and Technology Centre (ESTEC), European Space Agency (ESA)-European Space Agency (ESA), Konkoly Observatory, Research Centre for Astronomy and Earth Sciences [Budapest], Hungarian Academy of Sciences (MTA)-Hungarian Academy of Sciences (MTA), DLR Institute of Planetary Research, German Aerospace Center (DLR), Departamento de Matemàtica, PUC RIO, Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), ECLIPSE 2015, Laboratoire d'Astrophysique de Bordeaux [Pessac] (LAB), Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany, Türinger Landessternwarte Tautenburg, Dipartimento di Fisica, Università di Genova e Sezione INFN, Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Max-Planck-Institut für Astronomie (MPIA), Konkoly Observatory of the Hungarian Academy of Sciences, MTA CSFK, Budapest, Konkoly Thege Miklos ut, 15-17, Hungary, Department of Physics, Department of Physics, Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH, UK, Instituto de Astrofísica de Canarias (IAC), Etoile, Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics (LESIA), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Haute résolution angulaire en astrophysique, Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), INAF-Osservatorio Astrofisico di Torino Strada Osservatorio, 20 10025, Pino Torinese, TO, Italy, Observatoire astronomique de l'Universite de Geneve, 51 ch. des Maillettes, 1290, Versoix, Switzerland, Instituto Astronômico e Geofísico, Universidade de São Paulo (IAG), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA), Rheinisches Institut für Umweltforschung an der Universität zu Köln (RIU), Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Centro de Astrofisica da Universidade do Porto (CAUP), Laboratoire Univers et Théories (LUTH (UMR_8102)), Tel Aviv University (TAU), Max Planck Institut für Plasma Physik and Excellence Cluster, Department of Earth and Planetary Sciences, Weizmann Institute of Science, 234 Herzl St., 76100, Rehovot, Israel
Jazyk: angličtina
Rok vydání: 2015
Předmět:
Zdroj: Astronomy & Astrophysics, 584, A13
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2015, 584, pp.A131. ⟨10.1051/0004-6361/201526763⟩
Astronomy and Astrophysics-A&A, 2015, 584, pp.A131. ⟨10.1051/0004-6361/201526763⟩
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
ISSN: 0004-6361
DOI: 10.1051/0004-6361/201526763⟩
Popis: We report the detection of a rare transiting brown dwarf with a mass of 59 M_Jup and radius of 1.1 R_Jup around the metal-rich, [Fe/H] = +0.44, G9V star CoRoT-33. The orbit is eccentric (e = 0.07) with a period of 5.82 d. The companion, CoRoT-33b, is thus a new member in the so-called brown dwarf desert. The orbital period is within 3% to a 3:2 resonance with the rotational period of the star. CoRoT-33b may be an important test case for tidal evolution studies. The true frequency of brown dwarfs close to their host stars (P < 10 d) is estimated to be approximately 0.2% which is about six times smaller than the frequency of hot Jupiters in the same period range. We suspect that the frequency of brown dwarfs declines faster with decreasing period than that of giant planets.
13 pages, 8 figures, accepted for publication in A&A
Databáze: OpenAIRE
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