Case C Mass Transfer and Long-orbital-period Blue Stragglers

Details Case C Mass Transfer and Long-orbital-period Blue Stragglers Case C Mass Transfer and Long-orbital-period Blue Stragglers

Nov 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aipc..948..431c&link_type=abstract

UNSOLVED PROBLEMS IN STELLAR PHYSICS: A Conference in Honor of Douglas Gough. AIP Conference Proceedings, Volume 948, pp. 431-4

Physics

Faint Blue Stars, White Dwarfs, Degenerate Stars, Nuclei Of Planetary Nebulae, Mass Loss And Stellar Winds, Stellar Structure, Interiors, Evolution, Nucleosynthesis, Ages, Spectroscopic Binaries, Close Binaries, Globular Clusters In The Milky Way

Scientific paper

In this paper we report on the critical mass ratio, qc, for stable Roche lobe overflow (RLOF) derived from detailed binary evolutions for case C mass transfer. The study shows that a more evolved star is less stable under RLOF, indicating that qc decreases with increasing core mass. Non-conservative RLOF strongly affects qc, while a stellar wind has little influence on it. The criterion may provide enough progenitors (parent binaries) for the observed long-orbital-period blue stragglers in the old open cluster M67, if non-conservative RLOF is assumed.

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