2009/02/16 by R. G. West, D. R. Anderson, M. Gillon +27 · 2 citations
Physics and Astronomy · #Astro and Planetary Science #Astrophysics and Star Formation Studies #Stellar, planetary, and galactic studies #astro-ph.EP
paper · pdf · doi:10.1088/0004-6256/137/6/4834
Submitted to AJ
arxiv created 2009/02/16 · openalex publication_date 2009/04/29 · arxiv updated 2009/12/01 · openalex created_date 2021/02/01 · openalex updated_date 2026/07/31
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 (ρ p = 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.