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
Journal article, 2015

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.

stars: rotation

eclipses

brown dwarfs

Author

S. Csizmadia

German Aerospace Center (DLR)

A. Hatzes

D. Gandolfi

Heidelberg University

University of Turin

M. Deleuil

Laboratoire d'Astrophysique de Marseille

F. Bouchy

Laboratoire d'Astrophysique de Marseille

Malcolm Fridlund

Chalmers, Earth and Space Sciences, Radio Astronomy and Astrophysics

L. Szabados

Hungarian Academy of Sciences

H. Parviainen

University of Oxford

J. Cabrera

German Aerospace Center (DLR)

S. Aigrain

University of Oxford

R. Alonso

University of La Laguna

Instituto Astrofisico de Canarias

J. M. Almenara

Laboratoire d'Astrophysique de Marseille

A. Baglin

Paris Diderot University

P. Borde

Laboratoire d'Astrophysique de Bordeaux

A. S. Bonomo

Istituto nazionale di astrofisica (INAF)

H. J. Deeg

Instituto Astrofisico de Canarias

University of La Laguna

R. F. Diaz

University of Geneva

A. Erikson

German Aerospace Center (DLR)

S. Ferraz-Mello

University of Sao Paulo (USP)

M. T. dos Santos

University of Sao Paulo (USP)

E. W. Guenther

T. Guillot

Université Nice Sophia Antipolis (UNS)

S. Grziwa

University of Cologne

G. Hebrard

Pierre and Marie Curie University (UPMC)

P. Klagyivik

University of La Laguna

Instituto Astrofisico de Canarias

M. Ollivier

University of Paris-Sud

M. Patzold

University of Cologne

H. Rauer

German Aerospace Center (DLR)

Technische Universität Berlin

D. Rouan

Paris Diderot University

A. Santerne

Universidade do Porto

J. Schneider

Paris Diderot University

T. Mazeh

Tel Aviv University

G. Wuchterl

S. Carpano

Max Planck Institute

A. Ofir

Weizmann Institute of Science

Astronomy and Astrophysics

0004-6361 (ISSN) 1432-0746 (eISSN)

Vol. 584 A13

Infrastructure

Onsala Space Observatory

Subject Categories

Fusion, Plasma and Space Physics

DOI

10.1051/0004-6361/201526763

More information

Latest update

4/4/2019 1