70 DA WHITE DWARFS IDENTIFIED IN LAMOST PILOT SURVEY
文献类型：期刊论文
| 作者 | Zhao, J. K.1; Luo, A. L.1; Oswalt, T. D.2; Zhao, G.1
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| 刊名 | ASTRONOMICAL JOURNAL
 |
| 出版日期 | 2013-06-01 |
| 卷号 | 145期号:6 |
| 关键词 | white dwarfs |
| 英文摘要 | We present a spectroscopically identified catalog of 70 DA white dwarfs (WDs) from the LAMOST pilot survey. Thirty-five are found to be new identifications after cross-correlation with the Eisenstein et al. and Villanova catalogs. The effective temperature and gravity of these WDs are estimated by Balmer lines fitting. Most of them are hot WDs. The cooling times and masses of these WDs are estimated by interpolation in theoretical evolution tracks. The peak of the mass distribution is found to be similar to 0.6 M-circle dot, which is consistent with prior work in the literature. The distances of these WDs are estimated using the method of synthetic spectral distances. All of these WDs are found to be in the Galactic disk from our analysis of space motions. Our sample supports the expectation that WDs with high mass are concentrated near the plane of the Galactic disk. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000333343700012 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5931]  |
| 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, Key Lab Opt Astron, Beijing 100012, Peoples R China 2.Florida Inst Technol, Phys & Space Sci Dept, Melbourne, FL 32901 USA |
| 推荐引用方式 GB/T 7714 | Zhao, J. K.,Luo, A. L.,Oswalt, T. D.,et al. 70 DA WHITE DWARFS IDENTIFIED IN LAMOST PILOT SURVEY[J]. ASTRONOMICAL JOURNAL,2013,145(6). |
| APA | Zhao, J. K.,Luo, A. L.,Oswalt, T. D.,&Zhao, G..(2013).70 DA WHITE DWARFS IDENTIFIED IN LAMOST PILOT SURVEY.ASTRONOMICAL JOURNAL,145(6). |
| MLA | Zhao, J. K.,et al."70 DA WHITE DWARFS IDENTIFIED IN LAMOST PILOT SURVEY".ASTRONOMICAL JOURNAL 145.6(2013). |
入库方式： OAI收割
来源：国家天文台
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