Reference : Transiting exoplanets from the CoRoT space mission. XXVI. CoRoT-24: a transiting mult...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/171497
Transiting exoplanets from the CoRoT space mission. XXVI. CoRoT-24: a transiting multiplanet system
English
Alonso, R. mailto [Observatoire de l'Université de Genève, 51 chemin des Maillettes, 1290, Sauverny, Switzerland ; Instituto de Astrofísica de Canarias, 38205, La Laguna, Tenerife, Spain; Dpto. de Astrofísica, Universidad de La Laguna, 38206, La Laguna, Tenerife, Spain]
Moutou, C. [Laboratoire d'Astrophysique de Marseille, CNRS & Aix-Marseille University, 38 rue Frédéric Joliot-Curie, 13388, Marseille Cedex 13, France]
Endl, M. [McDonald Observatory, University of Texas at Austin, Austin, TX, 78712, USA]
Almenara, J.-M. [Laboratoire d'Astrophysique de Marseille, CNRS & Aix-Marseille University, 38 rue Frédéric Joliot-Curie, 13388, Marseille Cedex 13, France]
Guenther, E. W. [Thüringer Landessternwarte, Sternwarte 5, , 07778, Tautenburg, Germany; Space Research Institute, Austrian Academy of Science, Schmiedlstr. 6, 8042, Graz, Austria]
Deleuil, M. [Laboratoire d'Astrophysique de Marseille, CNRS & Aix-Marseille University, 38 rue Frédéric Joliot-Curie, 13388, Marseille Cedex 13, France]
Hatzes, A. [Thüringer Landessternwarte, Sternwarte 5, , 07778, Tautenburg, Germany]
Aigrain, S. [Oxford Astrophyiscs, Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH, UK]
Auvergne, M. [LESIA, Observatoire de Paris, place Jules Janssen, 92195, Meudon Cedex, France]
Baglin, A. [LESIA, Observatoire de Paris, place Jules Janssen, 92195, Meudon Cedex, France]
Barge, P. [Laboratoire d'Astrophysique de Marseille, CNRS & Aix-Marseille University, 38 rue Frédéric Joliot-Curie, 13388, Marseille Cedex 13, France]
Bonomo, A. S. [Laboratoire d'Astrophysique de Marseille, CNRS & Aix-Marseille University, 38 rue Frédéric Joliot-Curie, 13388, Marseille Cedex 13, France]
Bordé, P. [Institut d'Astrophysique Spatiale, Université Paris-Sud & CNRS, 91405, Orsay, France]
Bouchy, F. [Observatoire de Haute-Provence, Saint-Michel-l'Observatoire, 04670, France; Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre et Marie Curie, 98bis boulevard Arago, 75014, Paris, France; Observatoire de l'Université de Genève, 51 chemin des Maillettes, 1290, Sauverny, Switzerland]
Cavarroc, C. [Institut d'Astrophysique Spatiale, Université Paris-Sud & CNRS, 91405, Orsay, France]
Cabrera, J. [Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany]
Carpano, S. [Research and Scientific Support Department, ESTEC/ESA, PO Box 299, 2200 AG, Noordwijk, The Netherlands]
Csizmadia, Sz [Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany]
Cochran, W. D. [McDonald Observatory, University of Texas at Austin, Austin, TX, 78712, USA]
Deeg, H. J. [Instituto de Astrofísica de Canarias, 38205, La Laguna, Tenerife, Spain; Dpto. de Astrofísica, Universidad de La Laguna, 38206, La Laguna, Tenerife, Spain]
Díaz, R. F. [Laboratoire d'Astrophysique de Marseille, CNRS & Aix-Marseille University, 38 rue Frédéric Joliot-Curie, 13388, Marseille Cedex 13, France; Observatoire de l'Université de Genève, 51 chemin des Maillettes, 1290, Sauverny, Switzerland]
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, University of São Paulo, Department of Astronomy, Office F209, rua do Matão, 1226, Cid. Universitária, 05.508-090, São Paulo 2013, SP, Brazil]
Fridlund, M. [Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany; Research and Scientific Support Department, ESTEC/ESA, PO Box 299, 2200 AG, Noordwijk, The Netherlands]
Fruth, T. [Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany; German Space Operations Center, German Aerospace Center, Münchner Strasse 20, 82234, Weßling, Germany]
Gandolfi, D. [Landessternwarte Königstuhl, Zentrum für Astronomie der Universität Heidelberg, Königstuhl 12, 69117, Heidelberg, Germany]
Gillon, Michaël mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa) >]
Grziwa, S. [Rheinisches Institut für Umweltforschung, Abteilung Planetenforschung, an der Universität zu Köln, Aachener Strasse 209, 50931, Köln, Germany]
Guillot, T. [Université de Nice-Sophia Antipolis, CNRS UMR 6202, Observatoire de la Côte d'Azur, BP 4229, 06304, Nice Cedex 4, France]
Hébrard, G. [Observatoire de Haute-Provence, Saint-Michel-l'Observatoire, 04670, France; Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre et Marie Curie, 98bis boulevard Arago, 75014, Paris, France]
Jorda, L. [Laboratoire d'Astrophysique de Marseille, CNRS & Aix-Marseille University, 38 rue Frédéric Joliot-Curie, 13388, Marseille Cedex 13, France]
Léger, A. [Institut d'Astrophysique Spatiale, Université Paris-Sud & CNRS, 91405, Orsay, France]
Lammer, H. [Space Research Institute, Austrian Academy of Science, Schmiedlstr. 6, 8042, Graz, Austria]
Lovis, C. [Observatoire de l'Université de Genève, 51 chemin des Maillettes, 1290, Sauverny, Switzerland]
MacQueen, P. J. [McDonald Observatory, University of Texas at Austin, Austin, TX, 78712, USA]
Mazeh, T. [School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, 69978, Tel Aviv, Israel]
Ofir, A. [Institut für Astrophysik, Georg-August-Universität, Friedrich-Hund-Platz 1, 37077, Göttingen, Germany]
Ollivier, M. [Institut d'Astrophysique Spatiale, Université Paris-Sud & CNRS, 91405, Orsay, France]
Pasternacki, T. [Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany]
Pätzold, M. [Rheinisches Institut für Umweltforschung, Abteilung Planetenforschung, an der Universität zu Köln, Aachener Strasse 209, 50931, Köln, 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 Jules Janssen, 92195, Meudon Cedex, France]
Santerne, A. [Laboratoire d'Astrophysique de Marseille, CNRS & Aix-Marseille University, 38 rue Frédéric Joliot-Curie, 13388, Marseille Cedex 13, France; Centro de Astrofísica, Universidade do Porto, rua das Estrelas, 4150-762, Porto, Portugal]
Schneider, J. [LUTH, Observatoire de Paris, CNRS, Université Paris Diderot, 5 place Jules Janssen, 92195, Meudon, France]
Tadeu dos Santos, M. [IAG, University of São Paulo, Department of Astronomy, Office F209, rua do Matão, 1226, Cid. Universitária, 05.508-090, São Paulo 2013, SP, Brazil]
Tingley, B. [Instituto de Astrofísica de Canarias, 38205, La Laguna, Tenerife, Spain; Dpto. de Astrofísica, Universidad de La Laguna, 38206, La Laguna, Tenerife, Spain; Institut for Fysik og Astronomi, Aarhus Universitet, Ny Munkegade 120, 8000, Aarhus C, Denmark]
Titz-Weider, R. [Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489, Berlin, Germany]
Weingrill, J. [Space Research Institute, Austrian Academy of Science, Schmiedlstr. 6, 8042, Graz, Austria]
Wuchterl, G. [Thüringer Landessternwarte, Sternwarte 5, , 07778, Tautenburg, Germany)]
1-Jul-2014
Astronomy and Astrophysics
567
112
Yes
International
[en] planetary systems ; techniques: photometric ; techniques: radial velocities ; techniques: spectroscopic
[en] We present the discovery of a candidate multiply transiting system, the first one found in the CoRoT mission. Two transit-like features with periods of 5.11 and 11.76 d are detected in the CoRoT light curve around a main sequence K1V star of r = 15.1. If the features are due to transiting planets around the same star, these would correspond to objects of 3.7 ± 0.4 and 5.0 ± 0.5 R[SUB]⊕[/SUB] , respectively. Several radial velocities serve to provide an upper limit of 5.7 M[SUB]⊕[/SUB] for the 5.11 d signal and to tentatively measure a mass of 28[SUP]+11[/SUP][SUB]-11[/SUB] M[SUB]⊕[/SUB] for the object transiting with a 11.76 d period. These measurements imply low density objects, with a significant gaseous envelope. The detailed analysis of the photometric and spectroscopic data serves to estimate the probability that the observations are caused by transiting Neptune-sized planets as much as over 26 times higher than a blend scenario involving only one transiting planet and as much as over 900 times higher than a scenario involving two blends and no planets. The radial velocities show a long-term modulation that might be attributed to a 1.5 M[SUB]Jup[/SUB] planet orbiting at 1.8 AU from the host, but more data are required to determine the precise orbital parameters of this companion. The CoRoT space mission, launched on 27 December 2006, has been developed and is operated by the CNES, with the contribution of Austria, Belgium, Brazil, ESA (RSSD and Science Program), Germany, and Spain. Some of the observations were made with the HARPS spectrograph at ESO La Silla Observatory (184.C-0639) and with the HIRES spectrograph at the Keck Telescope (N035Hr, N143Hr 260 and N095Hr). Partly based on observations obtained at ESO Paranal Observatory, Chile (086.C-0235(A) and B).Tables 2-4 and Fig. 12 are available in electronic form at <A href="http://www.aanda.org/10.1051/0004-6361/201118662/olm">http://www.aanda.org</A>
http://hdl.handle.net/2268/171497
10.1051/0004-6361/201118662
http://adsabs.harvard.edu/abs/2014A%26A...567A.112A

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