Physical Sciences: Origin of the Ultra-short Period Binary WZ Sagittae

Details Physical Sciences: Origin of the Ultra-short Period Binary WZ Sagittae Physical Sciences: Origin of the Ultra-short Period Binary WZ Sagittae

Mar 1970

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1970natur.225.1229v&link_type=abstract

Nature, Volume 225, Issue 5239, pp. 1229-1230 (1970).

Computer Science

Scientific paper

THE recent discovery of several binaries with periods in the range of a few hours has raised the problem of their past evolution. Three eclipsing binaries are in that group: the old nova WZ Sge, EX Hya and VV Pup. I shall confine myself to the case of WZ Sge, for which the largest amount of data is available. Krzeminski and Kraft1 have shown that the system is composed of a DA white dwarf, for which they estimate a mass M = 0.59 Msolar, and a secondary of mass m = 0.03 Msolar. The radii are R~=0.87 × 109 cm and r~=7 × 109 cm, and the separation a = 3.7 × 1010 cm.

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