The possibility of detecting close binary degenerate dwarfs

Details The possibility of detecting close binary degenerate dwarfs The possibility of detecting close binary degenerate dwarfs

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986azh....63.1012t&link_type=abstract

Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 63, Sept.-Oct. 1986, p. 1012-1015. In Russian.

Astronomy and Astrophysics

Astronomy

4

Dwarf Stars, Eclipsing Binary Stars, Radial Velocity, Stellar Evolution, Gravitational Waves, Star Distribution, Stellar Orbits

Scientific paper

The parameters of close binary degenerate dwarfs that are formed in the course of evolution of close binary systems have been analysed. It has been shown that the semiamplitudes of radial velocities of a considerable part of binary dwarfs are confined to an interval 100 - 250 km/s, which is accessible to observations. The duration of eclipses in such systems is 2 - 4 minutes, the orbital periods are ≡4 hours. The degenerate components of the most close systems (a ⪉ 2 - 3 R_sun;) merge in 1010years due to angular momentum loss by means of gravitational waves. The frequency of merging in the Galaxy is ≡0.1 per year.

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