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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 ...
HE 0230−4323 revisited: a new rapidly pulsating sdB star
(Oxford University Press, 2010)
HE 0230−4323 is a hot sdB star in a binary system. An earlier work demonstrated that the
light curve of the system shows a strong (∼4 per cent) reflection effect and also appears to
exhibit photometric variations of the ...
Multicolour time series photometry of the T Tauri star CVSO 30
(Oxford University Press, 2015)
Five consecutive runs of at least five hours, and two shorter runs, of V(RI)C time series
photometry of CVSO 30 are presented. No evidence could be seen for planetary transits,
previously claimed in the literature for ...
A search for p-mode pulsations in white dwarf stars using the Berkeley Visible Imaging Tube detector
(Oxford University Press, 2014)
We present high-speed photometry (resolution 0.1 s) obtained during the commissioning of the
Berkely Visible Imaging Tube system on the Southern African Large Telescope (SALT). The
observations were an attempt to search ...
The analysis of indexed astronomical time series – XII. The statistics of oversampled Fourier spectra of noise plus a single sinusoid
(Oxford University Press, 2015)
With few exceptions, theoretical studies of periodogram properties focus on pure noise time
series. This paper considers the case in which the time series consists of noise together with a
single sinusoid, observed at ...
The Herschel* view of the environment of the radio galaxy 4C+41.17 at z = 3.8
(Oxford University Press, 2013)
We present Herschel observations at 70, 160, 250, 350 and 500 μm of the environment of the
radio galaxy 4C+41.17 at z = 3.792. About 65 per cent of the extracted sources are securely
identified with mid-infrared sources ...
A comparative analysis of contraceptive use in Africa: evidence from DHS
(SAGE Publications, 2016)
The aim of this article is to show a comparative analysis of contraceptive use in areas of traditionally high
fertility that have gone through profound changes. Data have been taken from the latest Demographic and
Health ...
Is millennium development goal 4 achievable in Tanzania?
(WB Saunders, 2013)
Introduction: This paper will focus on MDG4, which is concerned with
reducing child mortality. Childhood mortality rates are the
leading indicator of the level of child health and overall
development of a country; and ...
Simulation of Y-chromosomal haplotype data
(Elsevier, 2010)
The non-recombining nature of the Y-chromosome determines the non-independence of alleles between
loci. The evolution of short tandem repeat (STR) loci in the Y-chromosome is the result of different factors
such as ...
The “four sigma” limit for significant periodicities
(Springer Verlag, 2010)
Most of the pulsations which have been observed
in sdB stars have very low amplitudes. Detection of modes
from photometric observations is usually performed by noting
the most prominent peaks in a periodogram or, ...