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RE: WASP-30b
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Title: WASP-30b: a 61 Mjup brown dwarf transiting a V=12, F8 star
Authors: D. R. Anderson, A. Collier Cameron, C. Hellier, M. Lendl, P. F. L. Maxted, D. Pollacco, D. Queloz, B. Smalley, A. M. S. Smith, I. Todd, A. H. M. J. Triaud, R. G. West, S. C. C. Barros, B. Enoch, M. Gillon, T. A. Lister, F. Pepe, D. Ségransan, R. A. Street, S. Udry
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We report the discovery of a 61-Jupiter-mass brown dwarf, 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 RJup) for the companion that is consistent with that predicted (0.914 RJup) by a model of a 1-Gyr-old, non-irradiated brown dwarf 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 (2000), thus confirming the theory.

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L

Posts: 131433
Date:
Permalink  
 

Title: WASP-30b: a 61 Mjup brown dwarf transiting a V=12, F8 star
Authors: D. R. Anderson, A. Collier Cameron, C. Hellier, M. Lendl, P. F. L. Maxted, D. Pollacco, D. Queloz, B. Smalley, A. M. S. Smith, I. Todd, A. H. M. J. Triaud, R. G. West, S. C. C. Barros, B. Enoch, M. Gillon, T. A. Lister, F. Pepe, D. Ségransan, R. A. Street, S. Udry

We report the discovery of a 61-Jupiter-mass brown dwarf, which transits its F8V, rotationally-synchronised 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 RJup) for the companion that is consistent with that predicted (0.914 RJup) by a model of a 1-Gyr-old, non-irradiated brown dwarf with a dusty atmosphere.

Read more

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