Article (Scientific journals)
Transiting exoplanets from the CoRoT space mission. XVIII. CoRoT-18b: a massive hot Jupiter on a prograde, nearly aligned orbit
Hébrard, G.; Evans, T. M.; Alonso, R. et al.
2011In Astronomy and Astrophysics, 533, p. 130
Peer Reviewed verified by ORBi
 

Files


Full Text
1107.2032v2.pdf
Author preprint (2.6 MB)
Download

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
planetary systems; techniques: spectroscopic; techniques: photometric; techniques: radial velocities
Abstract :
[en] We report the detection of CoRoT-18b, a massive hot Jupiter transiting in front of its host star with a period of 1.9000693 ± 0.0000028 days. This planet was discovered thanks to photometric data secured with the CoRoT satellite combined with spectroscopic and photometric ground-based follow-up observations. The planet has a mass M[SUB]p[/SUB] = 3.47 ± 0.38 M[SUB]Jup[/SUB], a radius R[SUB]p[/SUB] = 1.31 ± 0.18 R[SUB]Jup[/SUB], and a density ρ[SUB]p[/SUB] = 2.2 ± 0.8 g cm[SUP]-3[/SUP]. It orbits a G9V star with a mass M[SUB]⋆[/SUB] = 0.95 ± 0.15 M[SUB]&sun;[/SUB], a radius R[SUB]⋆[/SUB] = 1.00 ± 0.13 R[SUB]&sun;[/SUB], and arotation period P[SUB]rot[/SUB] = 5.4 ± 0.4 days. The age of the system remains uncertain, with stellar evolution models pointing either to a few tens Ma or several Ga, while gyrochronology and lithium abundance point towards ages of a few hundred Ma. This mismatch potentially points to a problem in our understanding of the evolution of young stars, with possibly significant implications for stellar physics and the interpretation of inferred sizes of exoplanets around young stars. We detected the Rossiter-McLaughlin anomaly in the CoRoT-18 system thanks to the spectroscopic observation of a transit. We measured the obliquity ψ = 20° ± 20° (sky-projected value λ = -10° ± 20°), indicating that the planet orbits in the same way as the star is rotating and that this prograde orbit is nearly aligned with the stellar equator. The CoRoT space mission, launched on 2006 December 27, has been developed and is operated by CNES, with the contribution of Austria, Belgium, Brazil, ESA (RSSD and Science Programme), Germany and Spain.Table 2 is available in electronic form at <A href="http://www.aanda.org">http://www.aanda.org</A>
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Hébrard, G.;  Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis boulevard Arago, 75014, Paris, France ; Observatoire de Haute-Provence, CNRS/OAMP, 04870, Saint-Michel-l'Observatoire, France
Evans, T. M.;  Department of Physics, Denys Wilkinson Building Keble Road, Oxford, OX1 3RH, UK
Alonso, R.;  Observatoire de l'Université de Genève, 51 chemin des Maillettes, 1290, Sauverny, Switzerland
Fridlund, M.;  Research and Scientific Support Department, European Space Agency, Keplerlaan1, 2200AG, Noordwijk, The Netherlands
Ofir, A.;  School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, Israel
Aigrain, S.;  Department of Physics, Denys Wilkinson Building Keble Road, Oxford, OX1 3RH, UK
Guillot, T.;  Observatoire de la Côte d'Azur, Laboratoire Cassiopée, BP 4229, 06304, Nice Cedex 4, France
Almenara, J. M.;  Laboratoire d'Astrophysique de Marseille, 38 rue Frédéric Joliot-Curie, 13388, Marseille Cedex 13, France ; Instituto de Astrofísica de Canarias, and Universidad de La Laguna, Dept. de Astrofísica, 38205, La Laguna, Tenerife, Spain
Auvergne, M.;  LESIA, Observatoire de Paris, Place J. Janssen, 92195, Meudon Cedex, France
Baglin, A.;  LESIA, Observatoire de Paris, Place J. Janssen, 92195, Meudon Cedex, France
Barge, P.;  Laboratoire d'Astrophysique de Marseille, 38 rue Frédéric Joliot-Curie, 13388, Marseille Cedex 13, France
Bonomo, A. S.;  Laboratoire d'Astrophysique de Marseille, 38 rue Frédéric Joliot-Curie, 13388, Marseille Cedex 13, France
Bordé, P.;  Institut d'Astrophysique Spatiale, Université Paris XI, 91405, Orsay, France
Bouchy, F.;  Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis boulevard Arago, 75014, Paris, France ; Observatoire de Haute-Provence, CNRS/OAMP, 04870, Saint-Michel-l'Observatoire, France
Cabrera, J.;  Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany
Carone, L.;  Rheinisches Institut für Umweltforschung an der Universität zu Köln, Aachener Strasse 209, 50931, Germany
Carpano, S.;  Research and Scientific Support Department, European Space Agency, Keplerlaan1, 2200AG, Noordwijk, The Netherlands
Cavarroc, C.;  Institut d'Astrophysique Spatiale, Université Paris XI, 91405, Orsay, France
Csizmadia, Szilard;  Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany
Deeg, H. J.;  Instituto de Astrofísica de Canarias, and Universidad de La Laguna, Dept. de Astrofísica, 38205, La Laguna, Tenerife, Spain
Deleuil, M.;  Laboratoire d'Astrophysique de Marseille, 38 rue Frédéric Joliot-Curie, 13388, Marseille Cedex 13, France
Díaz, R. F.;  Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis boulevard Arago, 75014, Paris, France ; Observatoire de Haute-Provence, CNRS/OAMP, 04870, Saint-Michel-l'Observatoire, 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
Ferraz-Mello, S.;  IAG, Universidade de Sao Paulo, Brazil
Gandolfi, D.;  Research and Scientific Support Department, European Space Agency, Keplerlaan1, 2200AG, Noordwijk, The Netherlands
Gibson, N.;  Department of Physics, Denys Wilkinson Building Keble Road, Oxford, OX1 3RH, UK
Gillon, Michaël  ;  University of Liège, Allée du 6 août 17, Sart Tilman, Liège 1, Belgium
Guenther, E.;  Thüringer Landessternwarte Tautenburg, Sternwarte 5, 07778, Tautenburg, Germany
Hatzes, A.;  Thüringer Landessternwarte Tautenburg, Sternwarte 5, 07778, Tautenburg, Germany
Havel, M.;  Observatoire de la Côte d'Azur, Laboratoire Cassiopée, BP 4229, 06304, Nice Cedex 4, France
Jorda, L.;  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
Léger, A.;  Institut d'Astrophysique Spatiale, Université Paris XI, 91405, Orsay, France
Llebaria, A.;  Laboratoire d'Astrophysique de Marseille, 38 rue Frédéric Joliot-Curie, 13388, Marseille Cedex 13, France
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
Ollivier, M.;  Institut d'Astrophysique Spatiale, Université Paris XI, 91405, Orsay, France
Parviainen, H.;  Instituto de Astrofísica de Canarias, and Universidad de La Laguna, Dept. de Astrofísica, 38205, La Laguna, Tenerife, Spain
Pätzold, M.;  Rheinisches Institut für Umweltforschung an der Universität zu Köln, Aachener Strasse 209, 50931, Germany
Queloz, D.;  Observatoire de l'Université de Genève, 51 chemin des Maillettes, 1290, Sauverny, Switzerland
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.;  LESIA, Observatoire de Paris, Place J. Janssen, 92195, Meudon Cedex, France
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 Astrofísica de Canarias, and Universidad de La Laguna, Dept. de Astrofísica, 38205, La Laguna, Tenerife, Spain
Wuchterl, G.;  Thüringer Landessternwarte Tautenburg, Sternwarte 5, 07778, Tautenburg, Germany
More authors (37 more) Less
Language :
English
Title :
Transiting exoplanets from the CoRoT space mission. XVIII. CoRoT-18b: a massive hot Jupiter on a prograde, nearly aligned orbit
Publication date :
01 September 2011
Journal title :
Astronomy and Astrophysics
ISSN :
0004-6361
eISSN :
1432-0746
Publisher :
EDP Sciences, Les Ulis, France
Volume :
533
Pages :
130
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
http://de.arxiv.org/abs/1107.2032
Available on ORBi :
since 10 November 2011

Statistics


Number of views
52 (0 by ULiège)
Number of downloads
70 (0 by ULiège)

Scopus citations®
 
43
Scopus citations®
without self-citations
29
OpenCitations
 
38

Bibliography


Similar publications



Contact ORBi