Astrometric Binary Systems - the Age of the Galaxy and the Space Density of White Dwarf Stars

Details Astrometric Binary Systems - the Age of the Galaxy and the Space Density of White Dwarf Stars Astrometric Binary Systems - the Age of the Galaxy and the Space Density of White Dwarf Stars

Jun 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983nssl.conf..417s&link_type=abstract

The Nearby Stars and the Stellar Luminosity Function, Proceedings of IAU Colloquium No. 76 held 13-16 June 1983 at Wesleyan Univ

Astronomy and Astrophysics

Astronomy

4

Scientific paper

From an analysis of the occurrence of white dwarfs in astrometric binaries it is concluded that the birthrate of low-mass stars in wide binary systems some 12×109 years ago must have been dramatically smaller than the present rate. It is also stated that the total mass density in the solar neighborhood in the form of white dwarfs and cooled-down, hitherto unseen, "black dwarfs" should be less than 0.01 M_sun; pc-3.

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