The Low Density Transiting Exoplanet WASP-15b
Abstract
We report the discovery of a low-density exoplanet transiting an 11th magnitude star in the Southern hemisphere. WASP-15b, which orbits its host star with a period P = 3.7520656 ± 0.0000028 d, has a mass M p = 0.542 ± 0.050 M J and radius R p = 1.428 ± 0.077 R J, and is therefore one of the least dense transiting exoplanets so far discovered (ρp = 0.247 ± 0.035 g cm-3). An analysis of the spectrum of the host star shows it to be of spectral type around F5, with an effective temperature T eff = 6300 ± 100 K and [Fe/H] = -0.17 ± 0.11.
- Publication:
-
The Astronomical Journal
- Pub Date:
- June 2009
- DOI:
- arXiv:
- arXiv:0902.2651
- Bibcode:
- 2009AJ....137.4834W
- Keywords:
-
- binaries: eclipsing;
- planetary systems;
- stars: individual: WASP-15;
- techniques: photometric;
- techniques: radial velocities;
- techniques: spectroscopic;
- Astrophysics - Earth and Planetary Astrophysics
- E-Print:
- Submitted to AJ
