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Far-UV radiation from hot subdwarf stars in early-type galaxies
Han ZW(韩占文); Chen XF(陈雪飞)
Source PublicationProceedings of the International Astronomical Union (IAU) - Highlights of Astronomy
Contribution Rank第1完成单位
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Far-ultraviolet (FUV) excess is crucial to our understanding of early-type galaxies and it is widely believed that the FUV radiation originates mainly from hot subwarf stars. Hot subdwarf stars may form from binary interactions or from single star evolution. In the binary channel, a star near the tip of the first giant branch (FGB) may get its envelope removed by its companion via stable Roche lobe overflow or common envelope ejection, and then evolves to a hot subdwarf star (Han et al. 2002, 2003, 2007). Such a process does not depend much on metallicity.

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Subject Area天文学 ; 恒星与银河系
MOST Discipline Catalogue理学 ; 理学::天文学
Archive Date2015-04-20
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Document Type会议论文
AffiliationKey Laboratory for the Structure and Evolution of Celestial Objects, Yunnan Observatory, Kunming, 650011, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Han ZW,Chen XF. Far-UV radiation from hot subdwarf stars in early-type galaxies[C],2015:124-124.
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