X-ray heating. II - The reflection effect in Scorpius X-1

Details X-ray heating. II - The reflection effect in Scorpius X-1 X-ray heating. II - The reflection effect in Scorpius X-1

Jun 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...206..876p&link_type=abstract

Astrophysical Journal, vol. 206, June 15, 1976, pt. 1, p. 876-882.

Astronomy and Astrophysics

Astrophysics

7

Companion Stars, Eclipsing Binary Stars, Light Curve, Radiant Heating, X Ray Irradiation, X Ray Stars, Emission Spectra, Photosphere, Roche Limit, Stellar Atmospheres, Stellar Models, Ubv Spectra

Scientific paper

The periodic optical light curve of Sco X-1 is discussed theoretically. A binary model with X-ray heating of the nondegenerate companion fits the observations for an orbital inclination of 5 to 15 deg. Orbital eccentricity is ruled out as the cause of the periodic light variation. If the emission lines are formed in the neighborhood of the degenerate star, then the nondegenerate star does not fill its Roche lobe.

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