Open AccessA search for short time‐scale I ‐band variability in ultracool dwarfs
Author(s) -
Koen Chris
Publication year - 2003
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.1365-2966.2003.07099.x
Subject(s) - physics , brown dwarf , photometry (optics) , astrophysics , light curve , astronomy , scale (ratio) , stars , quantum mechanics
76 hours of CCD photometry of 11 L dwarfs and one T dwarf is described. Three objects, including the T dwarf ε Indi B, showed convincing evidence for variability. A periodicity of 8 h is clearly visible in the light curve of 2MASS J1155395−372735.