CaII H&K emission distribution of ～ 120 000 F, G and K stars in LAMOST DR1
文献类型：期刊论文
| 作者 | Zhao Jingkun2 ; Oswalt Terry D3; Chen Yuqin2; Shi Jianrong2; Tan Kefeng2; Fang Xiangsong2; Zhao Gang2; Yang Ming2; Zhang Yong1; Hou Yonghui1
|
| 刊名 | Research in Astronomy and Astrophysics
 |
| 出版日期 | 2015 |
| 卷号 | 15期号:8页码:1282 |
| 关键词 | stars activity |
| ISSN号 | 1674-4527 |
| 英文摘要 | We present chromospheric activity index SHK measurements for 119 995 F, G and K stars with high signal-to-noise ratio (S/N > 80) spectra, extracted from LAMOST DR1 in SDSS g band. The index δS for each of these stars is calculated by the difference between its SHK value and the baseline determined from very inactive stars. The effect of metallicity on measurement of δS varies with stellar T_(eff). No evident Vaughan-Preston gap appears in our sample. The relation between δS and vertical distance from the Galactic plane is determined for stars with T_(eff) 5500K, similar δS levels appear in both young and old cluster stars, which supports Pace’s suggestion that caution should be exercised when deriving the age of a single star by using its chromospheric activity. Finally, we investigate the relation between δS and the kinematics of our sample. |
| 语种 | 英语 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/62770]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.中国科学院国家天文台南京天文光学技术研究所 2.中国科学院国家天文台 3.Embry-Riddle Aeronautical University |
| 推荐引用方式 GB/T 7714 | Zhao Jingkun,Oswalt Terry D,Chen Yuqin,等. CaII H&K emission distribution of ～ 120 000 F, G and K stars in LAMOST DR1[J]. Research in Astronomy and Astrophysics,2015,15(8):1282. |
| APA | Zhao Jingkun.,Oswalt Terry D.,Chen Yuqin.,Shi Jianrong.,Tan Kefeng.,...&Wang Yuefei.(2015).CaII H&K emission distribution of ～ 120 000 F, G and K stars in LAMOST DR1.Research in Astronomy and Astrophysics,15(8),1282. |
| MLA | Zhao Jingkun,et al."CaII H&K emission distribution of ～ 120 000 F, G and K stars in LAMOST DR1".Research in Astronomy and Astrophysics 15.8(2015):1282. |
入库方式： OAI收割
来源：国家天文台
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