The Edinburgh-Cape Blue Object Survey - III. Zone 2; galactic latitudes -30° > b > -40°

D. O'Donoghue, D. Kilkenny, C. Koen, N. Hambly, H. MacGillivray, R. S. Stobie

Research output: Contribution to journalArticlepeer-review

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.
Original languageEnglish
Pages (from-to)240-251
Number of pages12
JournalMonthly Notices of the Royal Astronomical Society
Volume431
Issue number1
DOIs
Publication statusPublished - 1 May 2013

Keywords

  • surveys
  • stars: early-type
  • stars: horizontal branch
  • subdwarfs
  • white dwarfs
  • quasars: general

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