Prediction for the first generation stars from a Galactic halo chemical evolution model with Miller-Scalo initial mass function
文献类型：期刊论文
| 作者 | Lu, Y ; Zhao, G; Deng, LC; Cen, MR; Liang, YC
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| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2001-02-01 |
| 卷号 | 367期号:1页码:277-281 |
| 关键词 | galaxy : evolution galaxy : halo-stars : abundance stars : formation supernovae : general |
| 英文摘要 | A model of supernova-driven chemical evolution of the Galactic halo proposed by Tsujimoto et al. (1999) (TSY) is used to investigate the observations of the first generation stars (FGS). We assume in this paper that a star with a metallicity [Fe/H] less than or equal to -6 is truly a FGS. We obtain FGS probabilities with the Miller-Scalo form of the stellar initial mass function and limit our model parameters to values consistent with the observed metallicity distributions of metal-poor stars in the range of -4.0 < [Fe/H] < -1.0. We find a metallicity distribution function (MDF) of the long-lived halo field stars for [Fe/H] < -1 against the iron abundance in agreement with the observations. If the star formation in the halo is confined to individual gas clouds with masses from 1 10(7) to 1 10(8) M., our model suggests that the probability of identifying FGS in the halo is about 6.14 10(-5) to 6.14 10(-6). |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000167440000025 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/8578]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Beijing Astron Observ, Beijing 100012, Peoples R China 2.Cent China Normal Univ, Dept Phys, Wuhan 430079, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lu, Y,Zhao, G,Deng, LC,et al. Prediction for the first generation stars from a Galactic halo chemical evolution model with Miller-Scalo initial mass function[J]. ASTRONOMY & ASTROPHYSICS,2001,367(1):277-281. |
| APA | Lu, Y,Zhao, G,Deng, LC,Cen, MR,&Liang, YC.(2001).Prediction for the first generation stars from a Galactic halo chemical evolution model with Miller-Scalo initial mass function.ASTRONOMY & ASTROPHYSICS,367(1),277-281. |
| MLA | Lu, Y,et al."Prediction for the first generation stars from a Galactic halo chemical evolution model with Miller-Scalo initial mass function".ASTRONOMY & ASTROPHYSICS 367.1(2001):277-281. |
入库方式： OAI收割
来源：国家天文台
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