Roche-lobe overflow and massive X-ray binary systems

Details Roche-lobe overflow and massive X-ray binary systems Roche-lobe overflow and massive X-ray binary systems

Jan 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979a%26a....71..352s&link_type=abstract

Astronomy and Astrophysics, vol. 71, no. 3, Jan. 1979, p. 352-358.

Astronomy and Astrophysics

Astronomy

37

Binary Stars, Mass Transfer, Roche Limit, X Ray Astronomy, X Ray Stars, Early Stars, Stellar Atmospheres, Stellar Mass Ejection, Stellar Rotation, Stellar Winds, Supergiant Stars

Scientific paper

It is shown that the 'photosphere' of an early-type (super)giant component of a massive X-ray binary system may still be several density scale heights inside its critical lobe, while the mass transfer from the overflowing atmospheric layers powers the bright X-ray source. Calculations of atmospheric Roche-lobe overflow from massive (16 to 32 solar masses) core hydrogen-burning stars onto compact companions of 1 solar mass show that Roche-lobe overflow can give rise to relatively long-lived (10,000 to 100,000 yr) strong X-ray sources.

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