Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/28693
Title: | A deeper view of the CoRoT-9 planetary system. A small non-zero eccentricity for CoRoT-9b likely generated by planet-planet scattering | Authors: | BONOMO, ALDO STEFANO Hébrard, G. Raymond, S. N. Bouchy, F. Lecavelier des Etangs, A. Bordé, P. Aigrain, S. Almenara, J. -M. Alonso, R. Cabrera, J. Csizmadia, Sz. Damiani, C. Deeg, H. J. Deleuil, M. Díaz, R. F. Erikson, A. Fridlund, M. Gandolfi, D. Guenther, E. Guillot, T. Hatzes, A. Izidoro, A. Lovis, C. Moutou, C. Ollivier, M. Pätzold, M. Rauer, H. Rouan, D. Santerne, A. Schneider, J. |
Issue Date: | 2017 | Journal: | ASTRONOMY & ASTROPHYSICS | Number: | 603 | First Page: | A43 | Abstract: | <ASTROBJ>CoRoT-9b</ASTROBJ> is one of the rare long-period (P = 95.3 days) transiting giant planets with a measured mass known to date. We present a new analysis of the <ASTROBJ>CoRoT-9</ASTROBJ> system based on five years of radial-velocity (RV) monitoring with HARPS and three new space-based transits observed with CoRoT and Spitzer. Combining our new data with already published measurements we redetermine the CoRoT-9 system parameters and find good agreement with the published values. We uncover a higher significance for the small but non-zero eccentricity of CoRoT-9b () and find no evidence for additional planets in the system. We use simulations of planet-planet scattering to show that the eccentricity of CoRoT-9b may have been generated by an instability in which a 50 M<SUB>⊕</SUB> planet was ejected from the system. This scattering would not have produced a spin-orbit misalignment, so we predict that the CoRoT-9b orbit should lie within a few degrees of the initial plane of the protoplanetary disk. As a consequence, any significant stellar obliquity would indicate that the disk was primordially tilted. | URI: | http://hdl.handle.net/20.500.12386/28693 | URL: | https://www.aanda.org/articles/aa/full_html/2017/07/aa30624-17/aa30624-17.html | ISSN: | 0004-6361 | DOI: | 10.1051/0004-6361/201730624 | Bibcode ADS: | 2017A&A...603A..43B | Fulltext: | open |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Bonomoetal_2017b.pdf | PDF editoriale | 2.07 MB | Adobe PDF | View/Open |
Page view(s)
57
checked on Aug 6, 2024
Download(s)
13
checked on Aug 6, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are published in Open Access, unless otherwise indicated.