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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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