Ultraviolet Observations of the Young Pre-IP Candidate HS1136+6646

Details Ultraviolet Observations of the Young Pre-IP Candidate HS1136+6646 Ultraviolet Observations of the Young Pre-IP Candidate HS1136+6646

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aspc..334..393s&link_type=abstract

14th European Workshop on White Dwarfs, ASP Conference Series, Vol. 334 Proceedings of a meeting held at Kiel, July 19-23, 2004

Astronomy and Astrophysics

Astronomy

Scientific paper

FUSE and HST/STIS Observations of the post-common envelope (CE) pre-cataclysmic variable (CV) binary HS1136+6646 have revealed a pre-intermediate polar (IP) candidate. These UV observations have made it possible to accurately measure the system parameters of the binary system which previously could only be estimated using optical data. Radial velocity measurements over an entire orbital cycle have revealed the binary system to contain a 0.83 M&sun; white dwarf primary with a gravitational redshift of 45 km s-1. The mass of the secondary star and inclination of the binary system has also been determined to be 0.36 M&sun; and 71.8° respectively. With the white dwarf suspected of possessing a moderate magnetic field, this binary system is among the only suspected pre-CV systems to be a pre-intermediate polar candidate.

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