Searching for weather in brown dwarfs

1998/09/30 by C. G. Tinney, Andrew J. Tolley, A. J. Tolley · 3 citations
Engineering · Physics and Astronomy · #Astro and Planetary Science #Astronomical Observations and Instrumentation #Astronomy #Astrophysics #Brown dwarf #Geometry #Physics #Rotation (mathematics) #Rotation period #Stars #Stellar, planetary, and galactic studies #astro-ph

paper · pdf · doi:10.1046/j.1365-8711.1999.02297.x

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

arxiv created 1998/11/17 · openalex publication_date 1999/03/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

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).

Citations

• Very Low Mass Stars

Cited by

• Detection and measurement from narrow-band tunable filter scans
• Cloud Atlas: Discovery of Rotational Spectral Modulations in a Low-mass, L-type Brown Dwarf Companion to a Star
• Variability of Brown Dwarfs
• The theory of brown dwarfs and extrasolar giant planets