Hot white dwarfs, OB subdwarfs and dark clouds

Details Hot white dwarfs, OB subdwarfs and dark clouds Hot white dwarfs, OB subdwarfs and dark clouds

Jul 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988aj.....96..275r&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 96, July 1988, p. 275-296.

Statistics

9

Dark Matter, Hot Stars, Subdwarf Stars, White Dwarf Stars, Interstellar Extinction, Main Sequence Stars, Molecular Clouds, Star Distribution, Ubv Spectra

Scientific paper

The authors describe a method of using UBV photographic photometry to survey obscured regions in the Galactic plane for hot white dwarfs and OB subdwarfs. From an initial survey of two regions, the first towards the Coalsack, and the second covering part of the Scorpius-Centaurus cloud, the authors have found at least six white dwarfs, one probable interacting binary, five B subdwarfs, and two O subdwarfs. The space densities computed from these, admittedly sparse, statistics are similar to those deduced from Green's analysis of the Palomar-Green survey and thus a factor of 3 higher than Fleming et al's recent reanalysis of those data. The authors find a space density of ≡2.0×10-2stars pc-3 for white dwarfs with MV ≤ 13.0.

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