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An extensive search for rapid optical variability in ultracool dwarfs
(Oxford University Press, 2013)
In this paper, a summary of optical time-series photometry of 125 ultracool dwarfs is given.
The observing strategy was to monitor each object continuously for 2–3 h in order to ascertain
whether itwas rapidly variable. ...
Spectroscopy of the variable K-dwarf UNSW-V-760: is it a pre-main-sequence pulsator?
(Oxford University Press, 2013)
The star UNSW-V-760 is a known variable, showing both flares and two non-sinusoidal
periodicities. Availability of high signal-to-noise spectra reported in this paper has enabled
a revision of the spectral type of this ...
The Edinburgh-Cape Blue Object Survey - III. Zone 2; galactic latitudes -30? > b > -40?
(Oxford University Press, 2013)
The Edinburgh–Cape Blue Object Survey seeks to identify point sources with an ultraviolet
excess. Results for zone 2 of the survey are presented here, covering that part of the South
Galactic Cap between 30◦ and 40◦ from ...
Time series models of three sets of RXTE Observations of 4U 1543-47
(Oxford University Press, 2013)
The X-ray nova 4U 1543−47 was in a different physical state (low/hard, high/soft, and very high) during the
acquisition of each of the three time series analyzed in this paper. Standard time series models of the ...
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 ...
Linking multi-epoch CCD photometry of partially overlapping fields
(Oxford University Press, 2013)
A common problem in CCD photometry is to combine measurements obtained at different
epochs. This is especially challenging if the fields only overlap partially, and are sparse, so
that not all calibrating stars are ...