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The GAPS programme with HARPS-N@TNG IV: A planetary system around XO-2S
- Source :
- A&A 567, L6 (2014)
- Publication Year :
- 2014
-
Abstract
- We performed an intensive radial velocity monitoring of XO-2S, the wide companion of the transiting planet-host XO-2N, using HARPS-N at TNG in the framework of the GAPS programme. The radial velocity measurements indicate the presence of a new planetary system formed by a planet that is slightly more massive than Jupiter at 0.48 au and a Saturn-mass planet at 0.13 au. Both planetary orbits are moderately eccentric and were found to be dynamically stable. There are also indications of a long-term trend in the radial velocities. This is the first confirmed case of a wide binary whose components both host planets, one of which is transiting, which makes the XO-2 system a unique laboratory for understanding the diversity of planetary systems.<br />Comment: 7 pages, 3 figures, accepted on A&A Letter
- Subjects :
- Astrophysics - Earth and Planetary Astrophysics
Subjects
Details
- Database :
- arXiv
- Journal :
- A&A 567, L6 (2014)
- Publication Type :
- Report
- Accession number :
- edsarx.1407.0251
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1051/0004-6361/201424339