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WASP-30b : A 61MJup Brown Dwarf Transiting AV= 12, F8 Star

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Anderson, D. R., Collier Cameron, A., Hellier, C., Lendl, M., Maxted, P. F. L., Pollacco, Don, Queloz, D., Smalley, B., Smith, A. M. S., Todd, I. et al.
(2010) WASP-30b : A 61MJup Brown Dwarf Transiting AV= 12, F8 Star. The Astrophysical Journal, Volume 726 (Number 2). Article number L19. doi:10.1088/2041-8205/726/2/L19

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Official URL: http://dx.doi.org/10.1088/2041-8205/726/2/L19

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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.

Item Type: Journal Article
Divisions: Faculty of Science > Physics
Journal or Publication Title: The Astrophysical Journal
Publisher: Institute of Physics Publishing, Inc.
ISSN: 0004-637X
Official Date: 2010
Dates:
DateEvent
2010Published
Volume: Volume 726
Number: Number 2
Article Number: Article number L19
DOI: 10.1088/2041-8205/726/2/L19
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access

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