The probability of detecting first generation stars of the Galaxy
文献类型：期刊论文
| 作者 | Cen, MR; Lu, Y ; Zhao, G
|
| 刊名 | CHINESE ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2001-10-01 |
| 卷号 | 25期号:4页码:432-438 |
| 关键词 | Galactic halo model of chemical evolution Population III stars initial mass function |
| 英文摘要 | First generation stars are the oldest stars that were formed in post-big bang, primitive gas, containing no elements heavier than carbon, with ages greater than 14 Gyr and having undergone no evolution so far. Observations over a long time have confirmed that, up to now, no stars with zero metallicity ([Fe/H]) or with [Fe/H]less than or equal to -6 have been found in the Galaxy. To explain this absence, we shall make a theoretical calculation of the probability of detecting first generation stars using Tsuiimoto et al.'s model of chemical evolution of the galactic halo and assuming an initial mass function of the Miller-Scalo form. We use all the observational data on the halo stars to constrain the parameters. Our result is that, if the mass of the cloud that formed the stars is 10(6)-10(7) M-circle dot, then the probability of detecting first generation stars is 6.14x10(-4)-6.14x10(-5). |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000172661300006 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/8613]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Huazhong Normal Univ, Dept Phys, Wuhan 430079, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cen, MR,Lu, Y,Zhao, G. The probability of detecting first generation stars of the Galaxy[J]. CHINESE ASTRONOMY AND ASTROPHYSICS,2001,25(4):432-438. |
| APA | Cen, MR,Lu, Y,&Zhao, G.(2001).The probability of detecting first generation stars of the Galaxy.CHINESE ASTRONOMY AND ASTROPHYSICS,25(4),432-438. |
| MLA | Cen, MR,et al."The probability of detecting first generation stars of the Galaxy".CHINESE ASTRONOMY AND ASTROPHYSICS 25.4(2001):432-438. |
入库方式： OAI收割
来源：国家天文台
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