Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984ap%26ss..99..363d&link_type=abstract
(International Astronomical Union, Colloquium on Double Stars, Physical Properties and Generic Relations, 80th, Bandung, Indones
Astronomy and Astrophysics
Astrophysics
53
Binary Stars, Novae, Star Distribution, Stellar Evolution, Dwarf Novae, Galactic Evolution, Space Density, Supernovae
Scientific paper
The distributions of novae (N), recurrent novae (RN), dwarf novae (DN), and symbiotic stars (SS) perpendicular to the Galactic plane and their space densities are analyzed statistically and discussed in terms of current theories of cataclysmic-binary evolution. N and DN are found to belong to younger populations and to be related to W UMa systems and type-I supernovae, although some W UMa systems belong to an older population. RN and SS distributions are shown to be like those of older populations, including Mira variables and late-type giants. The high space density of long-period Algol systems near the sun suggests that less than one percent of such systems (with giant components) would need to evolve into cataclysmic binaries to account for the observed space density of the latter objects.
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