WASP-30b: A 61 M Jup BROWN DWARF TRANSITING A V = 12, F8 STAR
Open Access
- 17 December 2010
- journal article
- Published by American Astronomical Society in The Astrophysical Journal Letters
- Vol. 726 (2) , L19
- https://doi.org/10.1088/2041-8205/726/2/l19
Abstract
We report the discovery of a 61-Jupiter-mass brown dwarf (BD), which transits its F8V host star, WASP-30, every 4.16 days. From a range of age indicators we estimate the system age to be 1-2 Gyr. We derive a radius (0.89 ± 0.02 R Jup) for the companion that is consistent with that predicted (0.914 R Jup) by a model of a 1 Gyr old, non-irradiated BD with a dusty atmosphere. The location of WASP-30b in the minimum of the mass-radius relation is consistent with the quantitative prediction of Chabrier & Baraffe, thus confirming the theory.Keywords
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