The mass and helium discrepancy in massive stars: the case VELA X-1

Details The mass and helium discrepancy in massive stars: the case VELA X-1 The mass and helium discrepancy in massive stars: the case VELA X-1

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ssrv...66..395v&link_type=abstract

Space Science Reviews, Volume 66, Issue 1-4, pp. 395-400

Computer Science

7

Stars:Atmospheres, Stars:Evolution, Stars:Binaries

Scientific paper

A NLTE-analysis is presented of high S/N spectra of the optical component of the standard massive X-ray binary Vela X-1. In combination with the orbital parameters we conclude that the optical star is highly helium enriched and is significantly overluminous compared to standard evolutionary tracks of massive accretion stars. We then propose a new accretion model able to explain these features.

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