Searching for Weather in Brown Dwarfs

Details Searching for Weather in Brown Dwarfs Searching for Weather in Brown Dwarfs

1998-09-14

arxiv.org/abs/astro-ph/9809165v2

Astronomy and Astrophysics

Astrophysics

8 pages, 7 figures. To appear in the Monthly Notices of the RAS. Replaced version contains paper as accepted

Scientific paper

10.1046/j.1365-8711.1999.02297.x

We have used an innovative tuneable filter technique to carry out a search for the variability signatures of meterological processes in the atmospheres of two nearby brown dwarfs. We find no evidence for variability in the L-type brown dwarf DENIS-PJ1228-1547 in an observations spanning approximately half a rotation period (3 hours), and evidence for variability in the M-type brown dwarf LP 944-20 in multiple observations spanning approximately one third of a rotation period (1.5 hours).

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