Evolution of binary stars and its implications for evolutionary population synthesis
文献类型：会议论文
| 作者 | Han ZW(韩占文); Chen XF(陈雪飞); Zhang FH(张奉辉); Podsiadlowski, P; Chen XF(陈雪飞) ; Han ZW(韩占文); Zhang FH(张奉辉)
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| 出版日期 | 2010 |
| 会议名称 | 262nd Symposium of the International-Astronomical Union |
| 会议日期 | 2009-08-03 |
| 会议地点 | Rio de Janeiro, BRAZIL |
| 关键词 | stars: binaries: close stars: blue stragglers stars: subdwarfs galaxies: elliptical and lenticular, cD ultraviolet: galaxies |
| 卷号 | 262 |
| 期号 | 262 |
| 页码 | 44-47 |
| 通讯作者 | Han, Z (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China. |
| 英文摘要 | Most stars are members of binaries, and the evolution of a star in a close binary system differs from that of an ioslated star due to the proximity of its companion star. The components in a binary system interact in many ways and binary evolution leads to the formation of many peculiar stars, including blue stragglers and hot subdwarfs. We will discuss binary evolution and the formation of blue stragglers and hot subdwarfs, and show that those hot objects are important in the study of evolutionary population synthesis (EPS), and conclude that binary interactions should be included in the study of EPS. Indeed, binary interactions make a stellar population younger (hotter), and the far-ultraviolet (UV) excess in elliptical galaxies is shown to be most likely resulted from binary interactions. This has major implications for understanding the evolution of the far-UV excess and elliptical galaxies in general. In particular, it implies that the far-UV excess is not a sign of age, as had been postulated prviously and predicts that it should not be strongly dependent on the metallicity of the population, but exists universally from dwarf ellipticals to giant ellipticals. |
| 收录类别 | CPCI |
| 产权排序 | 第一完成单位 |
| 会议网址 | http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=7494328&fileId=S1743921310002504 |
| 会议录 | IAU Symposium Proceedings Series - STELLAR POPULATIONS: PLANNING FOR THE NEXT DECADE
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| 会议录出版者 | CAMBRIDGE UNIV PRESS |
| 学科主题 | Astronomy & Astrophysics |
| 会议录出版地 | THE PITT BUILDING, TRUMPINGTON ST, CAMBRIDGE CB2 1RP, CAMBS, ENGLAND |
| 语种 | 英语 |
| ISSN号 | 1743-9213 |
| ISBN号 | 978-0-521-76484-1 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/252]  |
| 专题 | 云南天文台_大样本恒星演化研究组 |
| 通讯作者 | Han ZW(韩占文) |
| 推荐引用方式 GB/T 7714 | Han ZW,Chen XF,Zhang FH,et al. Evolution of binary stars and its implications for evolutionary population synthesis[C]. 见:262nd Symposium of the International-Astronomical Union. Rio de Janeiro, BRAZIL. 2009-08-03.http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=7494328&fileId=S1743921310002504. |
入库方式： OAI收割
来源：云南天文台
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