2009/05/19 by I. Skillen, D. Pollacco, A. Collier Cameron +41 · 1 citation
Physics and Astronomy · #Astronomy #Astrophysics #Astrophysics and Star Formation Studies #Exoplanet #Gamma-ray bursts and supernovae #Metallicity #Orbital period #Photometry (optics) #Physics #Planet #RADIUS #Stars #Stellar, planetary, and galactic studies #Transit (satellite) #astro-ph.EP #astro-ph.SR
paper · pdf · doi:10.1051/0004-6361/200912018
4 pages. Accepted for publication in Astronomy and Astrophysics
arxiv created 2009/05/19 · openalex publication_date 2009/05/19 · arxiv updated 2015/05/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We report the discovery of WASP-13b, a low-mass transiting exoplanet with an orbital period of 4.35298 <i>±<i/> 0.00004 days. The transit has a depth of 9 mmag, and although our follow-up photometry does not allow us to constrain the impact parameter well (0 < <i>b<i/> < 0.46), with radius in the range <i>R<i/><sub>p<sub/> ~ 1.06-1.21 <i>R<i/><sub><i>J<i/><sub/> the location of WASP-13b in the mass-radius plane is nevertheless consistent with H/He-dominated, irradiated, low core mass and core-free theoretical models. The G1V host star is similar to the Sun in mass and metallicity ([M/H] = 0.0<i>±<i/>0.2), but is possibly older ( Gyr).