Transiting exoplanets from the CoRoT space mission. XXVI. CoRoT-24: a transiting multiplanet system

التفاصيل البيبلوغرافية
العنوان:	Transiting exoplanets from the CoRoT space mission. XXVI. CoRoT-24: a transiting multiplanet system
المؤلفون:	Alonso, R., Moutou, C., Endl, M., Almenara, J.-M., Guenther, E. W., Deleuil, M., Hatzes, A., Aigrain, S., Auvergne, M., Baglin, A., Barge, P., Bonomo, A. S., Bordé, P., Bouchy, F., Cavarroc, C., Cabrera, J., Carpano, S., Csizmadia, Sz, Cochran, W. D., Deeg, H. J., Díaz, R. F., Dvorak, R., Erikson, A., Ferraz-Mello, S., Fridlund, M., Fruth, T., Gandolfi, D., Gillon, Michaël, Grziwa, S., Guillot, T., Hébrard, G., Jorda, Laurent, Léger, A., Lammer, H., Lovis, C., MacQueen, P. J., Mazeh, T., Ofir, A., Ollivier, M., Pasternacki, T., Pätzold, M., Queloz, D., Rauer, H., Rouan, D., Santerne, A., Schneider, J., Tadeu dos Santos, M., Tingley, B., Titz-Weider, R., Weingrill, J., Wuchterl, G.
المصدر:	Astronomy and Astrophysics, 567, 112 (2014-07-01)
بيانات النشر:	EDP Sciences
سنة النشر:	2014
المجموعة:	University of Liège: ORBi (Open Repository and Bibliography)
مصطلحات موضوعية:	planetary systems, techniques: photometric, techniques: radial velocities, techniques: spectroscopic, Physical, chemical, mathematical & earth Sciences, Space science, astronomy & astrophysics, Physique, chimie, mathématiques & sciences de la terre, Aérospatiale, astronomie & astrophysique
الوصف:	peer reviewed ; 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 http://www.aanda.orgTest
نوع الوثيقة:	article in journal/newspaper
اللغة:	English
تدمد:	0004-6361 1432-0746
العلاقة:	http://adsabs.harvard.edu/abs/2014A%26A.567A.112ATest; urn:issn:0004-6361; urn:issn:1432-0746; https://orbi.uliege.be/handle/2268/171497Test; info:hdl:2268/171497; https://orbi.uliege.be/bitstream/2268/171497/1/1406.1270v2.pdfTest; scopus-id:2-s2.0-84904696632
DOI:	10.1051/0004-6361/201118662
الإتاحة:	https://doi.org/10.1051/0004-6361/201118662Test https://orbi.uliege.be/handle/2268/171497Test https://orbi.uliege.be/bitstream/2268/171497/1/1406.1270v2.pdfTest
حقوق:	open access ; http://purl.org/coar/access_right/c_abf2Test ; info:eu-repo/semantics/openAccess
رقم الانضمام:	edsbas.29E23861
قاعدة البيانات:	BASE

View record in BASE

Full Text Finder

الوصف
تدمد:	00046361 14320746
DOI:	10.1051/0004-6361/201118662