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On the nature of the variable star UNSW-V-760
(Oxford University Press, 2011)
The results of multicolour photometric monitoring over several nights of the probable X-ray
source UNSW-V-760 are presented. Drawing on both present and past observations, it is
shown that the star is multiperiodic and ...
More on the nature of the variable star UNSW-V-760
(Oxford University Press, 2012)
The results of two multicolour time-series photometric observing runs, separated by about two
months, are presented. The same periodicities previously detected in photometry of UNSWV-
760 are still present, albeit at ...
Multicolour time series photometry of three periodic ultracool dwarfs
(Oxford University Press, 2013)
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 ...
Time series photometry of the nearby brown dwarf DENIS-P J0041353-562112
(Oxford University Press, 2011)
DENIS-P J0041353−562112 is a brown dwarf, with a spectral type of M7.5, which may be
younger than 20 Myr. On the basis of its Hα emission-line asymmetry, it has been suggested
that the object is accreting material. If ...
PG 0907+123 and JL 194: slowly pulsating hot subdwarf stars
(Oxford University Press, 2010)
Multicolour time-series photometry of two newly discovered slowly pulsating sdB stars
(V1093 Her stars, also known as PG 1716 stars) is described. Both stars are fairly bright
and appear, from the limited amount of data, ...