Parameters of UX CVn

Details Parameters of UX CVn Parameters of UX CVn

Feb 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002arep...46..127s&link_type=abstract

Astronomy Reports, Volume 46, Issue 2, February 2002, pp.127-138

Astronomy and Astrophysics

Astronomy

Scientific paper

We have derived a complete set of parameters for the close binary system UX CVn made up of degenerate objects based on photometric and spectral observations. The total mass of the components is close to one solar mass, so that its further evolution cannot result in a type-I supernova. The spectrum of the binary indicates that the surface temperature of the hot subdwarf may have increased by 2000 K over 40 years. This heating rate is consistent with theoretical estimates for evolutionary tracks of low-luminosity hot subdwarfs. We also determined the abundances for ten elements in the atmosphere of the primary, which are consistent with the hypothesis that the binary is a member of Population II. There are signs of synthesized material ejected onto the surface of the star.

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