2008MNRAS.389..949K

Query : 2008MNRAS.389..949K

2008MNRAS.389..949K - Mon. Not. R. Astron. Soc., 389, 949-954 (2008/September-2)

Multicolour time series photometry of 2MASS 1207-3932.

KOEN C.

Abstract (from CDS):

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.

Abstract Copyright: © 2008 The Author. Journal compilation © 2008 RAS

Journal keyword(s): stars: individual: 2MASS J1207334-393254 (read: 2MASS J12073346-3932539) - stars: low-mass, brown dwarfs - stars: spots - stars: variables: other

Simbad objects: 5

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Number of rows : 5
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 V* AA Tau Or* 04 34 55.4201902392 +24 28 53.033624580 13.14 13.34 12.20 12.03   K5Ve 723 0
2 NAME TW Hya Association As* 11 01.9 -34 42           ~ 942 0
3 UCAC3 101-117691 * 12 07 31.0131829992 -39 32 28.190842008         13.48 ~ 3 0
4 TWA 27 LM* 12 07 33.4675524840 -39 32 54.016625184     19.95 17.99 15.88 M8IVe 338 0
5 TWA 27B BD* 12 07 33.50 -39 32 54.4           L3 281 0

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