Cabrera, J., Csizmadia, Sz., Montagnier, G., Fridlund, M., Ammler-von Eiff, M., Chaintreuil, S., Damiani, C., Deleuil, M., Ferraz-Mello, S., Ferrigno, A., Gandolfi, D., Guillot, T., Guenther, E. W., Hatzes, A., Hebrard, G., Klagyivik, P., Parviainen, H., Pasternacki, Th., Paetzold, M., Sebastian, D., Tadeu dos Santos, M., Wuchterl, G., Aigrain, S., Alonso, R., Almenara, J. -M., Armstrong, J. D., Auvergne, M., Baglin, A., Barge, P., Barros, S. C. C., Bonomo, A. S., Borde, P., Bouchy, F., Carpano, S., Chaffey, C., Deeg, H. J., Diaz, R. F., Dvorak, R., Erikson, A., Grziwa, S., Korth, J., Lammer, H., Lindsay, C., Mazeh, T., Moutou, C., Ofir, A., Ollivier, M., Palle, E., Rauer, H., Rouan, D., Samuel, B., Santerne, A. and Schneider, J. (2015). Transiting exoplanets from the CoRoT space mission XXVII. CoRoT-28b, a planet orbiting an evolved star, and CoRoT-29b, a planet showing an asymmetric transit. Astron. Astrophys., 579. LES ULIS CEDEX A: EDP SCIENCES S A. ISSN 1432-0746

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Abstract

Context. We present the discovery of two transiting extrasolar planets by the satellite CoRoT. Aims. We aim at a characterization of the planetary bulk parameters, which allow us to further investigate the formation and evolution of the planetary systems and the main properties of the host stars. Methods. We used the transit light curve to characterize the planetary parameters relative to the stellar parameters. The analysis of HARPS spectra established the planetary nature of the detections, providing their masses. Further photometric and spectroscopic ground-based observations provided stellar parameters (log g, T-eff, v sin i) to characterize the host stars. Our model takes the geometry of the transit to constrain the stellar density into account, which when linked to stellar evolutionary models, determines the bulk parameters of the star. Because of the asymmetric shape of the light curve of one of the planets, we had to include the possibility in our model that the stellar surface was not strictly spherical. Results. We present the planetary parameters of CoRoT-28b, a Jupiter-sized planet (mass 0.484 +/- 0.087 M-Jup; radius 0.955 +/- 0.066 R-Jup) orbiting an evolved star with an orbital period of 5.208 51 +/- 0.000 38 days, and CoRoT-29b, another Jupiter-sized planet (mass 0.85 +/- 0.20 M-Jup; radius 0.90 +/- 0.16 R-Jup) orbiting an oblate star with an orbital period of 2.850 570 +/- 0.000 006 days. The reason behind the asymmetry of the transit shape is not understood at this point. Conclusions. These two new planetary systems have very interesting properties and deserve further study, particularly in the case of the star CoRoT-29.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Cabrera, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Csizmadia, Sz.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Montagnier, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fridlund, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ammler-von Eiff, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Chaintreuil, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Damiani, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Deleuil, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ferraz-Mello, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ferrigno, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gandolfi, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Guillot, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Guenther, E. W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hatzes, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hebrard, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Klagyivik, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Parviainen, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pasternacki, Th.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Paetzold, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sebastian, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tadeu dos Santos, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wuchterl, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Aigrain, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Alonso, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Almenara, J. -M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Armstrong, J. D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Auvergne, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Baglin, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Barge, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Barros, S. C. C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bonomo, A. S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Borde, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bouchy, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Carpano, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Chaffey, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Deeg, H. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Diaz, R. F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dvorak, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Erikson, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Grziwa, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Korth, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lammer, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lindsay, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mazeh, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Moutou, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ofir, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ollivier, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Palle, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rauer, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rouan, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Samuel, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Santerne, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schneider, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-399271
DOI: 10.1051/0004-6361/201424501
Journal or Publication Title: Astron. Astrophys.
Volume: 579
Date: 2015
Publisher: EDP SCIENCES S A
Place of Publication: LES ULIS CEDEX A
ISSN: 1432-0746
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
RAPIDLY ROTATING STARS; SOLAR-TYPE STARS; LIGHT CURVES; LITHIUM ABUNDANCES; DWARF COMPANION; BINARY-SYSTEMS; HOT JUPITERS; PHASE CURVES; V410 TAURI; KEPLERMultiple languages
Astronomy & AstrophysicsMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/39927

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