The lithium-rotation correlation for WTTS in Taurus-Auriga
文献类型：期刊论文
| 作者 | Xing, Li-Feng; Shi, Jian-Rong ; Wei, Jian-Yan
|
| 刊名 | NEW ASTRONOMY
 |
| 出版日期 | 2007-02-01 |
| 卷号 | 12期号:4页码:265-270 |
| 关键词 | stars : Li abundance stars : evolution stars : pre-main-sequence |
| 英文摘要 | Surface lithium abundance and rotation velocity can serve as powerful and mutually complementary diagnostics of interior structure of stars. So far, the processes responsible for the lithium depletion during pre-main sequence evolution are still poorly understood. We investigate whether a correlation exists between equivalent widths of Li (EW(Li)) and rotation period (P-rot) for weak-line T Tauri stars (WTTSs). We find that rapidly rotating stars have lower EW(Li) and the fast burning of Li begins at the phase when star's P-rot evolves towards 3 days among 0.9M(circle dot) to 1.4M(circle dot) WTTSs in Taurus-Auriga. Our results support the conclusion by Piau and Turch-Chieze about a model for lithium depletion with age of the star and by Bouvier et al. in relation to rotation evolution. The turn over of the curve for the correlation between EW(Li) and P-rot is at the phase of zero-age main sequence (ZAMS). The EW(Li) decreases with decreasing P-rot before the star reaches the ZAMS, while it decreases with increasing P-rot (decreasing rotation velocity) for voting low-mass main sequence stars. This result could be explained as an age effect of Li depletion and the rapid rotation does not inhibit Li destruction among low-mass PMS stars. (c) 2006 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000243609900001 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/7165]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Zhengzhou Univ Light Ind, Dept Technol & Phys, Zhengzhou 450002, Peoples R China 3.Grad Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xing, Li-Feng,Shi, Jian-Rong,Wei, Jian-Yan. The lithium-rotation correlation for WTTS in Taurus-Auriga[J]. NEW ASTRONOMY,2007,12(4):265-270. |
| APA | Xing, Li-Feng,Shi, Jian-Rong,&Wei, Jian-Yan.(2007).The lithium-rotation correlation for WTTS in Taurus-Auriga.NEW ASTRONOMY,12(4),265-270. |
| MLA | Xing, Li-Feng,et al."The lithium-rotation correlation for WTTS in Taurus-Auriga".NEW ASTRONOMY 12.4(2007):265-270. |
入库方式： OAI收割
来源：国家天文台
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