Bibcode
Pätzold, M.; Endl, M.; Csizmadia, Sz.; Gandolfi, D.; Jorda, L.; Grziwa, S.; Carone, L.; Pasternacki, T.; Aigrain, S.; Almenara, J. M.; Alonso, R.; Auvergne, M.; Baglin, A.; Barge, P.; Bonomo, A. S.; Bordé, P.; Bouchy, F.; Cabrera, J.; Cavarroc, C.; Cochran, W. B.; Deleuil, M.; Deeg, H. J.; Díaz, R.; Dvorak, R.; Erikson, A.; Ferraz-Mello, S.; Fridlund, M.; Gillon, M.; Guillot, T.; Hatzes, A.; Hébrard, G.; Léger, A.; Llebaria, A.; Lammer, H.; MacQueen, P. J.; Mazeh, T.; Moutou, C.; Ofir, A.; Ollivier, M.; Parviainen, H.; Queloz, D.; Rauer, H.; Rouan, D.; Santerne, A.; Schneider, J.; Tingley, B.; Weingrill, J.; Wuchterl, G.
Bibliographical reference
Astronomy and Astrophysics, Volume 545, id.A6
Advertised on:
9
2012
Journal
Citations
21
Refereed citations
19
Description
CoRoT-21, a F8IV star of magnitude V = 16 mag, was observed by the space
telescope CoRoT during the Long Run 01 (LRa01) in the first winter field
(constellation Monoceros) from October 2007 to March 2008. Transits were
discovered during the light curve processing. Radial velocity follow-up
observations, however, were performed mainly by the 10-m Keck telescope
in January 2010. The companion CoRoT-21b is a Jupiter-like planet of
2.26 ± 0.33 Jupiter masses and 1.30 ± 0.14 Jupiter radii
in an circular orbit of semi-major axis 0.0417 ± 0.0011 AU and an
orbital period of 2.72474 ± 0.00014 days. The planetary bulk
density is (1.36 ± 0.48) × 103 kg
m-3, very similar to the bulk density of Jupiter, and follows
an M1/3 - R relation like Jupiter. The F8IV star is a
sub-giant star of 1.29 ± 0.09 solar masses and 1.95 ± 0.2
solar radii. The star and the planet exchange extremetidal forces that
will lead to orbital decay and extreme spin-up of the stellar rotation
within 800 Myr if the stellar dissipation is
Q∗/k2∗ ≤ 107.
The CoRoT space mission, launched on December 27th 2006, has been
developed and is operated by CNES, with the contribution of Austria,
Belgium, Brazil, ESA (RSSD and Science Programme), Germany and Spain.
Related projects
Helio and Astero-Seismology and Exoplanets Search
The principal objectives of this project are: 1) to study the structure and dynamics of the solar interior, 2) to extend this study to other stars, 3) to search for extrasolar planets using photometric methods (primarily by transits of their host stars) and their characterization (using radial velocity information) and 4) the study of the planetary
Savita
Mathur