Abstract
We report a transiting extrasolar giant planet around the star OGLE-TR-10 (orbital period = 3.1 days), which was uncovered as a candidate by the OGLE team in their photometric survey toward the Galactic center. We observed OGLE-TR-10 spectroscopically over a period of 2 yr (2002-2004), using the HIRES instrument with an iodine cell on the Keck I telescope, and measured small radial velocity variations that are consistent with the presence of a planetary companion. This confirms the earlier identification of OGLE-TR-10b by our team and also recently by Bouchy and coworkers as a possible planet. In addition, in this paper we are able to rule out a blend scenario as an alternative explanation. From an analysis combining all available radial velocity measurements with the OGLE light curve, we find that OGLE-TR-10b has a mass of 0.57 ± 0.12M J and a radius of 1.24 ± 0.09RJ. These parameters bear close resemblance to those of the first known transiting extrasolar planet, HD 20945 8b.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 372-377 |
| Number of pages | 6 |
| Journal | Astrophysical Journal |
| Volume | 624 |
| Issue number | 1 I |
| DOIs | |
| State | Published - May 1 2005 |
All Science Journal Classification (ASJC) codes
- Astronomy and Astrophysics
- Space and Planetary Science
Keywords
- Line: profiles
- Planetary systems
- Stars: evolution
- Stars: individual (OGLE-TR-10)
- Techniques: radial velocities