WASP-30b: A 61 M Jup Brown Dwarf Transiting a V = 12, F8 Star

D.R. Anderson, A. Collier Cameron, C. Hellier, M. Lendl, P.F.L. Maxted, Don Pollacco, D. Queloz, B. Smalley, A.M.S. Smith, I. Todd, A.H.M.J. Triaud, R.G. West, S.C. Barros

Research output: Contribution to journalArticle

67 Citations (Scopus)


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.
Original languageEnglish
JournalAstrophysical Journal Letters
Issue number2 PART II
Publication statusPublished - 10 Jan 2011

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

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