The Edinburgh-Cape Blue Object Survey - III. Zone 2; galactic latitudes -30? > b > -40?
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Date
2013
Journal Title
Journal ISSN
Volume Title
Publisher
Oxford University Press
Abstract
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 the Galactic plane and south of about −12. ◦ 3 of
declination. Edinburgh–Cape zone 2 comprises 66 UK Schmidt Telescope fields covering
about 1730 deg2, in which we find some 892 blue objects, including 423 hot subdwarfs
(∼47 per cent); 128 white dwarfs (∼14 per cent); 25 cataclysmic variables (∼3 per cent); 119
binaries (∼13 per cent), mostly composed of a hot subdwarf and a main-sequence F or G star;
66 horizontal branch stars (∼7 per cent) and 48 ‘star-like’ extragalactic objects (∼5 per cent).
A further 362 stars observed in the survey, mainly low-metallicity F- and G-type stars, are also
listed. Both low-dispersion spectroscopic classification and UBV photometry are presented for
almost all of the hot objects and either spectroscopy or photometry (or both) for the cooler
ones.
Description
Keywords
Surveys – stars, Early-type – stars, Horizontal branch, Subdwarfs, White dwarfs, Quasars, General
Citation
O'Donoghue, D. et al. (2013). The Edinburgh-Cape Blue Object Survey - III. Zone 2; galactic latitudes -30? > b > -40? Monthly Notices of the Royal Astronomical Society, 431: 240–251