Evolution of binary stars in the LMC with helium enrichment

Details Evolution of binary stars in the LMC with helium enrichment Evolution of binary stars in the LMC with helium enrichment

May 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.250..453r&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 250, May 15, 1991, p. 453-457. Research supported by Ta

Astronomy and Astrophysics

Astronomy

7

Abundance, Binary Stars, Magellanic Clouds, Stellar Evolution, Supergiant Stars, X Ray Binaries, Color-Magnitude Diagram, Helium, Star Distribution, Supernovae

Scientific paper

A comparison of available data with computed evolutionary tracks of massive stars whose metallicities are relevant to the LMC, with and without He-enriched envelopes, indicates that no less than 60 percent of supergiant stars may occur in binaries which will subsequently evolve into massive X-ray binaries. The observed number and orbital period distribution of the X-ray binaries in the LMC can therefore constrain supergiant-binary evolutionary scenarios. The distribution of postmain-sequence binaries is bimodal, encompassing close and wide binaries.

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