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The Galactic halo pulsar population
(Oxford University Press, 2018)
Most population studies of pulsars have hitherto focused on the disc of the Galaxy, the
Galactic centre, globular clusters, and nearby galaxies. It is expected that pulsars, by
virtue of their natal kicks, are also to ...
Modelling the rotation period distribution of M dwarfs in the Kepler field
(Springer Verlag, 2018)
McQuillan et al. (Mon. Not. R. Astron. Soc.432:1203, 2013) presented 1570 periods P of M dwarf stars in the field of view of the Kepler telescope. It is expected that most of these reflect rotation periods, due to starspots. ...
Calibrating the James Webb Space telescope filters as star formation rate indicators
(American Astronomical Society, 2018)
We have calibrated the 6.5m James Webb Space Telescope (JWST) mid-infrared (MIR) filters as star formation rate
(SFR) indicators, using JWST photometry synthesized from Spitzer spectra of 49 low-redshift galaxies, which ...
A framework for assessing the performance of pulsar search pipelines
(Oxford Unviersity Press, 2016)
In this paper, we present a framework for assessing the effect of non-stationary Gaussian noise and radio frequency interference (RFI) on the signal to noise ratio, the
number of false positives detected per true positive ...
A detection threshold in the amplitude spectra calculated from Kepler data obtained during K2 mission.
(Oxford University Press, 2015)
We present our analysis of simulated data in order to derive a detection threshold which can
be used in the pre-whitening process of amplitude spectra. In case of ground-based data of
pulsating stars, this threshold is ...
EC 10246-2707: a new eclipsing sdB + M dwarf binary⋆
(OUP, 2013)
We announce the discovery of a new eclipsing hot subdwarf B + M dwarf binary,
EC 10246-2707, and present multi-colour photometric and spectroscopic observations
of this system. Similar to other HW Vir-type binaries, the ...
Hot subdwarf stars in close-up view IV. Helium abundances and the 3He isotopic anomaly of subdwarf B stars
(EDP Sciences, 2013)
Atmospheric parameters and helium abundances of 44 bright subdwarf B stars have been determined. More than half of our sample
consists of newly discovered stars from the Edinburgh Cape survey. We showed that effective ...
The cosmic evolution of the IMF under the Jeans conjecture with implications for massive galaxies
(Oxford University Press, 2013)
We examine the cosmic evolution of a stellar initial mass function (IMF) in galaxies that varies
with the Jeans mass in the interstellar medium, paying particular attention to the K-band stellar
mass-to-light ratio (M/LK) ...
The ongoing pursuit of R Coronae Borealis stars: the ASAS-3 survey strikes again
(EDP Sciences, 2013)
CONTEXT: R Coronae Borealis stars( RCBs) are rare, hydrogen-deficient, carbon rich super giant variable stars that are likely the evolved merger products of pairs of CO and He white dwarfs. Only 55 RCB stars have been found ...
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 ...