Open AccessSearching for weather in brown dwarfs
Author(s) -
Tinney C. G.,
Tolley A. J.
Publication year - 1999
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.1999.02297.x
Subject(s) - brown dwarf , physics , astrophysics , rotation period , astronomy , rotation (mathematics) , stars , geometry , mathematics
We have used an innovative tunable filter technique to carry out a search for the variability signatures of meteorological processes in the atmospheres of two nearby brown dwarfs. We find no evidence for variability in the L‐type brown dwarf DENIS‐P J1228‐1547 in observations spanning approximately half a rotation period (3 h), 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 h).