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Correlates of infant and child mortality in Ethiopia 2005
(University of the Western Cape, 2010)
INTRODUCTION: Risk of mortality prevails for children with shorter birth interval since their mothers are likely
to have poor health. AIM: The aim of the study is to determine the indirect estimation of infant and child ...
Predicting gamma-ray burster redshifts from their prompt emission properties
(Oxford University Press, 2010)
This paper presents a study of the relation between gamma-ray burster redshift and several
of its prompt emission properties (spectral lag, light curve variability, peak energy, rise time
and the peak bolometric flux ...
Two new variable sdB stars, HE 0218−3437 and LB 1516
(Oxford University Press, 2010)
We present photometry which shows that two known hot subdwarf stars, HE 0218−3437 and
LB 1516, are variable. LB 1516 exhibits several frequencies in the range 12–25 cycles d−1
(periods of about 1–2 h) with amplitudes ...
UBV(RI)C JHK observations of Hipparcos-selected nearby stars
(Oxford University Press, 2010)
We present homogeneous, standardized UBV(RI)C photometry for over 700 nearby stars
selected on the basis of Hipparcos parallaxes. Additionally, we list JHK photometry for about
half of these stars, as well as L photometry ...
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 ...
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, ...