Spectroscopy of the unique degenerate binary star LSI + 61 deg 303

Details Spectroscopy of the unique degenerate binary star LSI + 61 deg 303 Spectroscopy of the unique degenerate binary star LSI + 61 deg 303

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981pasp...93..486h&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 93, Aug.-Sept. 1981, p. 486-489.

Astronomy and Astrophysics

Astronomy

123

Binary Stars, Radio Sources (Astronomy), Stellar Motions, Stellar Spectrophotometry, Ultraviolet Spectra, X Ray Sources, Balmer Series, Emission Spectra, Iue, Line Spectra, Main Sequence Stars, Radial Velocity, Spectral Line Width, Stellar Envelopes, Stellar Mass, Stellar Rotation

Scientific paper

IUE ultraviolet, and ground-based spectroscopic data are presented and discussed. The primary is a rapidly rotating B0 main-sequence star, with a stable shell. The radial velocities indicate binary motion in a 26.5-day orbit (in agreement with the radio flaring period), with a secondary of mass 1.1-1.5 solar masses. The broad Balmer emission appears to arise principally near the primary, and the line of sight is close to equatorial. These considerations bear on models involving X and gamma radiation from the system.

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