Transiting exoplanets from the CoRoT space mission XXIII. CoRoT-21b: a doomed large Jupiter around a faint subgiant star
2012 | journal article. A publication with affiliation to the University of Göttingen.
Jump to: Cite & Linked | Documents & Media | Details | Version history
Cite this publication
Transiting exoplanets from the CoRoT space mission XXIII. CoRoT-21b: a doomed large Jupiter around a faint subgiant star
Paetzold, W. M.; Endl, M.; Csizmadia, S.; Gandolfi, D.; Jorda, L.; Grziwa, S. & Carone, L. et al. (2012)
Astronomy and Astrophysics, 545 art. A6. DOI: https://doi.org/10.1051/0004-6361/201118425
Documents & Media
Details
- Authors
- Paetzold, W. M.; Endl, Michael; Csizmadia, Sz.; Gandolfi, D.; Jorda, Laurent; Grziwa, S.; Carone, L.; Pasternacki, T.; Aigrain, S.; Almenara, J. M.; Alonso, Rosario; Auvergne, M.; Baglin, A.; Barge, P.; Bonomo, A. S.; Borde, P.; Bouchy, F.; Cabrera, J. A.; Cavarroc, C.; Cochran, W. B.; Deleuil, M.; Deeg, H. J.; Diaz, R.; Dvorak, R.; Erikson, A.; Ferraz-Mello, Sylvio; Fridlund, M.; Gillon, M.; Guimaraes, Jose T. F.; Hatzes, Artie; Hebrard, G.; Leger, A.; Llebaria, A.; Lammer, H.; MacQueen, P. J.; Mazeh, T.; Moutou, C.; Ofir, Aviv; Olmstead, Marilyn M.; Parviainen, H.; Queloz, D.; Rauer, H.; Rouan, D.; Santerne, A.; Schneider, J.; Tingley, B.; Weingrill, J.; Wuchterl, G.
- Abstract
- 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) x 10(3) kg m(-3), very similar to the bulk density of Jupiter, and follows an M-1/3 - 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 extreme tidal 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.
- Issue Date
- 2012
- Status
- published
- Publisher
- Edp Sciences S A
- Journal
- Astronomy and Astrophysics
- Organization
- Fakultät für Physik
- ISSN
- 0004-6361
