Multicolour time series photometry of three periodic ultracool dwarfs
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Date
2013
Authors
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Publisher
Oxford University Press
Abstract
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.
Description
Keywords
Stars: low-mass, brown dwarfs, Stars: variables: general, Stars: individual: Kelu-1, Stars: individual: 2MASS J11553952-3727350, Stars: individual: DENIS-P J145407.8-640447
Citation
Koen, C. (2013). Multicolour time series photometry of three periodic ultracool dwarfs. Monthly Notices of the Royal Astronomical Society, 429(1): 652–660