An X-Ray Selected White Dwarf + M Dwarf Binary: RX J0458.9-6628

Details An X-Ray Selected White Dwarf + M Dwarf Binary: RX J0458.9-6628 An X-Ray Selected White Dwarf + M Dwarf Binary: RX J0458.9-6628

Oct 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995pasp..107..931h&link_type=abstract

Publications of the Astronomical Society of the Pacific, v.107, p.931

Astronomy and Astrophysics

Astronomy

7

White Dwarfs, Binaries: Close, X-Rays: Stars

Scientific paper

A new close binary containing a DA white dwarf and a dwarf M star has been identified from its X-ray emission. The spectra of both stars are seen with about equal flux at ~4600A. H and Ca II emission, associated with the M star, is also present. Limited photometry does not show any variability, but radial velocity changes indicate the binary period lies in the range from ~0.7 to a few days. The small observed velocity range and lack of pronounced emission line changes suggest a low inclination system. The DA velocities are poorly determined but suggest the unlikely conclusion that it may be the less massive star in the binary. (SECTION: Stars)

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