Multicolour time series photometry of 2MASS 1207-3932

Details Multicolour time series photometry of 2MASS 1207-3932 Multicolour time series photometry of 2MASS 1207-3932

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008mnras.389..949k&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 389, Issue 2, pp. 949-954.

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3

Stars: Individual: 2Mass J1207334-393254, Stars: Low-Mass, Brown Dwarfs, Stars: Spots, Stars: Variables: Other

Scientific paper

Time series photometry in VRI of the young brown dwarf Two-Micron All-Sky Survey (2MASS) J1207334-393254 is presented. Variability in I is insignificant, but amplitudes up to ~0.2 mag in R, and ~0.55 mag in V, are seen within a single night. There is also microvariability on time-scales of an hour or so, which appears to be present in data from all the three filters. There may be a non-sinusoidal periodicity of about half a day in the V and R data. A likely explanation for the variability is the presence of accretion hot spots.

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