Transiting exoplanets from the CoRoT space mission*. XXVIII. CoRoT-33b, an object in the brown dwarf desert with 2:3 commensurability with its host star
CSIZMADIA, Szilard
Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany
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Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany
CSIZMADIA, Szilard
Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany
Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany
SZABADOS, L.
Konkoly Observatory of the Hungarian Academy of Sciences, MTA CSFK, Budapest, Konkoly Thege Miklos ut, 15-17, Hungary
Konkoly Observatory of the Hungarian Academy of Sciences, MTA CSFK, Budapest, Konkoly Thege Miklos ut, 15-17, Hungary
CABRERA, Juan
Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany
Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany
BAGLIN, Annie
Laboratoire d'études spatiales et d'instrumentation en astrophysique [LESIA]
Etoile
Haute résolution angulaire en astrophysique
Laboratoire d'études spatiales et d'instrumentation en astrophysique [LESIA]
Etoile
Haute résolution angulaire en astrophysique
ERIKSON, Anders
Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany
Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany
RAUER, Heike
Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany
Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany
ROUAN, Daniel
Laboratoire d'études spatiales et d'instrumentation en astrophysique [LESIA]
Etoile
Haute résolution angulaire en astrophysique
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Laboratoire d'études spatiales et d'instrumentation en astrophysique [LESIA]
Etoile
Haute résolution angulaire en astrophysique
Langue
en
Article de revue
Ce document a été publié dans
Astronomy and Astrophysics - A&A. 2015, vol. 584, p. A131
EDP Sciences
Résumé en anglais
We report the detection of a rare transiting brown dwarf with a mass of 59 M<SUB>Jup</SUB> and radius of 1.1 R<SUB>Jup</SUB> around the metal-rich, [Fe/H] = 0.44, G9V star CoRoT-33. The orbit is eccentric (e = 0.07) with ...Lire la suite >
We report the detection of a rare transiting brown dwarf with a mass of 59 M<SUB>Jup</SUB> and radius of 1.1 R<SUB>Jup</SUB> 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.< Réduire
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