CHEMICAL ABUNDANCES OF MEMBER STARS IN THE OPEN CLUSTER NGC 2632 (PRAESEPE)
文献类型：期刊论文
| 作者 | Yang, X. L.1,2; Chen, Y. Q.1; Zhao, G.1
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| 刊名 | ASTRONOMICAL JOURNAL
 |
| 出版日期 | 2015-11-01 |
| 卷号 | 150期号:5 |
| 关键词 | Galaxy: disk open clusters and associations: individual (NGC 2632) stars: abundances |
| 英文摘要 | Based on high-resolution, high signal-to-noise ratio spectra, we present abundances of 17 elements (Fe, O, Na, Mg, Al, Si, Ca, Sc, Ti, V, Cr, Co, Ni, Y, Zr, Ba, La) for six stars (one Am star, one F dwarf star, and four GK giant stars) and radial velocities for 18 proper-motion selected member stars in the open cluster NGC 2632. In the Am star, s-process elements Y and Ba are clearly overabundant, which may be considered as an indicator of a peculiar Am star. The average [Fe/H] is 0.16 +/- 0.06 from four GK giant member stars, which is similar to that of solar-type stars in the literature. As compared with dwarf stars, significant overabundances are found for Na, Mg, and Ba elements in our giant stars, which can be explained by the evolutionary effect. We also detect a star-to-star scatter of [Na/Fe] ratios among four giants which locate approximately at the same position in the CMD. Finally, we perform an analysis on the possible connection between the abundance and spatial structure of NGC 2632, but we find no inhomogeneous abundance among different clumps of stars in this cluster based on our limited sample. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000366460500020 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5496]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, X. L.,Chen, Y. Q.,Zhao, G.. CHEMICAL ABUNDANCES OF MEMBER STARS IN THE OPEN CLUSTER NGC 2632 (PRAESEPE)[J]. ASTRONOMICAL JOURNAL,2015,150(5). |
| APA | Yang, X. L.,Chen, Y. Q.,&Zhao, G..(2015).CHEMICAL ABUNDANCES OF MEMBER STARS IN THE OPEN CLUSTER NGC 2632 (PRAESEPE).ASTRONOMICAL JOURNAL,150(5). |
| MLA | Yang, X. L.,et al."CHEMICAL ABUNDANCES OF MEMBER STARS IN THE OPEN CLUSTER NGC 2632 (PRAESEPE)".ASTRONOMICAL JOURNAL 150.5(2015). |
入库方式： OAI收割
来源：国家天文台
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