Csizmadia, Sz, Hatzes, A., Gandolfi, D., Deleuil, M., Bouchy, F., Fridlund, M., Szabados, L., Parviainen, H., Cabrera, J., Aigrain, S., Alonso, R., Almenara, J. -M., Baglin, A., Borde, P., Bonomo, A. S., Deeg, H. J., Diaz, R. F., Erikson, A., Ferraz-Mello, S., Tadeu dos Santos, M., Guenther, E. W., Guillot, T., Grziwa, S., Hebrard, G., Klagyivik, P., Ollivier, M., Paetzold, M., Rauer, H., Rouan, D., Santerne, A., Schneider, J., Mazeh, T., Wuchterl, G., Carpano, S. and Ofir, A. (2015). 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. Astron. Astrophys., 584. LES ULIS CEDEX A: EDP SCIENCES S A. ISSN 1432-0746

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Abstract

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.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Csizmadia, SzUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hatzes, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gandolfi, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Deleuil, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bouchy, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fridlund, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Szabados, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Parviainen, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cabrera, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Aigrain, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Alonso, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Almenara, J. -M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Baglin, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Borde, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bonomo, A. S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Deeg, H. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Diaz, R. F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Erikson, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ferraz-Mello, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tadeu dos Santos, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Guenther, E. W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Guillot, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Grziwa, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hebrard, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Klagyivik, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ollivier, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Paetzold, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rauer, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rouan, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Santerne, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schneider, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mazeh, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wuchterl, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Carpano, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ofir, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-384964
DOI: 10.1051/0004-6361/201526763
Journal or Publication Title: Astron. Astrophys.
Volume: 584
Date: 2015
Publisher: EDP SCIENCES S A
Place of Publication: LES ULIS CEDEX A
ISSN: 1432-0746
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
SOLAR-TYPE STARS; SOPHIE VELOCIMETRY; SHORT-PERIOD; DARKENING COEFFICIENTS; MODEL ATMOSPHERES; PLANET OCCURRENCE; LIGHT CURVES; MASS; COMPANIONS; CANDIDATESMultiple languages
Astronomy & AstrophysicsMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/38496

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