Cochran, W. B.[McDonald Observatory, The University of Texas at Austin, Austin, Texas, 78712, USA]
Deleuil, M.[Laboratoire d'Astrophysique de Marseille, 38 rue Frédéric Joliot-Curie, 13388, Marseille Cedex 13, France]
Deeg, H. J.[Instituto de Astrofisica de Canarias, 38205 La Laguna, Tenerife, Spain; Universidad de La Laguna, Dept. de Astrofísica, 38200 La Laguna, Tenerife, Spain]
Díaz, R.[Laboratoire d'Astrophysique de Marseille, 38 rue Frédéric Joliot-Curie, 13388, Marseille Cedex 13, France]
Dvorak, R.[University of Vienna, Institute of Astronomy, Türkenschanzstr. 17, 1180, Vienna, Austria]
Erikson, A.[Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany]
Llebaria, A.[Laboratoire d'Astrophysique de Marseille, 38 rue Frédéric Joliot-Curie, 13388, Marseille Cedex 13, France]
Lammer, H.[Space Research Institute, Austrian Academy of Science, Schmiedlstr. 6, 8042, Graz, Austria]
MacQueen, P. J.[McDonald Observatory, The University of Texas at Austin, Austin, Texas, 78712, USA]
Mazeh, T.[School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, Israel]
Moutou, C.[Laboratoire d'Astrophysique de Marseille, 38 rue Frédéric Joliot-Curie, 13388, Marseille Cedex 13, France]
Ofir, A.[School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, 69978, Tel Aviv, Israel; Georg-August-Universität, Institut für Astrophysik, Friedrich-Hund-Platz 1, 37077, Göttingen, Germany]
Parviainen, H.[Instituto de Astrofisica de Canarias, 38205 La Laguna, Tenerife, Spain; Universidad de La Laguna, Dept. de Astrofísica, 38200 La Laguna, Tenerife, Spain]
Queloz, D.[Observatoire de la Côte d Azur, Laboratoire Cassiopée, BP 4229, 06304, Nice Cedex 4, France]
Rauer, H.[Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany; Center for Astronomy and Astrophysics, TU Berlin, Hardenbergstr. 36, 10623, Berlin, Germany]
Rouan, D.[Department of Physics, Denys Wilkinson Building Keble Road, Oxford, OX1 3RH, UK]
Santerne, A.[Laboratoire d'Astrophysique de Marseille, 38 rue Frédéric Joliot-Curie, 13388, Marseille Cedex 13, France]
Schneider, J.[LUTH, Observatoire de Paris, CNRS, Université Paris Diderot, 5 place Jules Janssen, 92195, Meudon, France]
Tingley, B.[Instituto de Astrofisica de Canarias, 38205 La Laguna, Tenerife, Spain; Universidad de La Laguna, Dept. de Astrofísica, 38200 La Laguna, Tenerife, Spain]
Weingrill, J.[Space Research Institute, Austrian Academy of Science, Schmiedlstr. 6, 8042, Graz, Austria]
[en] 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) × 10[SUP]3[/SUP] kg m[SUP]-3[/SUP], very similar to the bulk density of Jupiter, and follows an M[SUP]1/3[/SUP] - 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[SUB]∗[/SUB]/k[SUB]2∗[/SUB] ≤ 10[SUP]7[/SUP]. 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.
[Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image >]
