2013MNRAS.429..652K

Query : 2013MNRAS.429..652K

2013MNRAS.429..652K - Mon. Not. R. Astron. Soc., 429, 652-660 (2013/February-2)

Multicolour time series photometry of three periodic ultracool dwarfs.

KOEN C.

Abstract (from CDS):

Photometry in I, or contemporaneously in I and R, of the known variable ultracool dwarfs Kelu-1 and 2MASS J11553952-3727350 is presented. The nature of the variability of Kelu-1 appears to evolve on time-scales of a day or less. Both the period and amplitude of the variability of 2MASS J11553952-3727350 have changed substantially since publication of earlier observations of the object. DENIS 1454-6604 is a new variable ultracool dwarf, with persistent and prominent brightness modulations at a period of 2.6 h.

Abstract Copyright: © 2012 The Author Published by Oxford University Press on behalf of the Royal Astronomical Society (2012)

Journal keyword(s): stars: brown dwarfs - stars: variables: general - stars: individual (Kelu-1, 2MASS J11553952-3727350, DENIS-P J145407.8-640447 (read: DENIS-P J145407.8-660447))

CDS comments: DENIS-P J145407.8-640447 is a misprint for DENIS-P J145407.8-660447.

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME TW Hya Association As* 11 01.9 -34 42           ~ 1018 0
2 2MASS J11553952-3727350 BD* 11 55 39.5361849740 -37 27 35.503012522           L2e 47 0
3 NAME Kelu-1 BD* 13 05 40.1642434199 -25 41 05.712165150         16.85 L2+L3.5 267 0
4 DENIS J145407.8-660447 BD* 14 54 07.9666817030 -66 04 47.395712699         16.90 L3.5 18 0

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