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Paper: Formation Scenarios of Hot Subdwarf Stars and their Implications for the Far-UV Excess of Elliptical Galaxies
Volume: 452, Fifth Meeting on Hot Subdwarf Stars and Related Objects
Page: 3
Authors: Han, Z.; Chen, X.; Lei, Z.; Podsiadlowski, P.
Abstract: In this talk, we review the latest various formation scenarios of hot subdwarf stars, and propose two new formation channels, an envelope ejection channel for metal-rich stellar population and a tidally enhanced stellar wind channel for a small fraction of binary systems. We then discuss the implications of the formation scenarios for far-UV excess of elliptical galaxies, and predict that the far-UV excess does not depend much on metallicity if the metallicity is lower than solar, but increases with mellallicity if the metallicity is over solar.
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