IK Peg - A nearby, short-period, Sirius-like system

Details IK Peg - A nearby, short-period, Sirius-like system IK Peg - A nearby, short-period, Sirius-like system

May 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mnras.262..277w&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 262, no. 2, p. 277-284.

Astronomy and Astrophysics

Astronomy

23

Binary Stars, Extreme Ultraviolet Radiation, Stellar Evolution, Stellar Spectrophotometry, White Dwarf Stars, Stellar Mass, Ultraviolet Astronomy

Scientific paper

The system IK Peg has been known to be a binary for over 60 years but the secondary has never been identified. The detection of this system in the British Wide Field Camera All-Sky Survey in the EUV has enabled the secondary to be positively identified as a white dwarf. Fits to EUV survey data, the first IUE spectrum, and archival X-ray data indicate that the system contains a high-mass white dwarf and that it is very close to edge-on. The evolutionary status of this system is discussed; it is shown to be the result of a common-envelope phase, and it is expected to evolve into a Type I supernova or a cataclysmic variable.

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