Spectroscopically Identified Cataclysmic Variables from the LAMOST Survey. I. The Sample
文献类型：期刊论文
| 作者 | Hou,Wen4 ; Luo,A-li1,2,3,4; Li,Yin-Bi4; Qin,Li2,3,4
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| 刊名 | The Astronomical Journal
 |
| 出版日期 | 2020-01-10 |
| 卷号 | 159期号:2 |
| 关键词 | Cataclysmic variable stars Dwarf novae Nova-like variable stars Catalogs Astronomy data analysis |
| ISSN号 | 0004-6256 |
| DOI | 10.3847/1538-3881/ab5962 |
| 英文摘要 | Abstract A sample of cataclysmic variables (CVs) is presented including spectroscopically identified 380 spectra of 245 objects, of which 58 CV candidates are new discoveries. The BaggingTopPush and the Random Forest algorithms are applied to the Fifth Data Release (DR5) of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) to retrieve CVs with strong emission lines and with broad absorption lines respectively. Based on spectroscopic classification, 134 dwarf novae, 41 nova-like variables, and 19 magnetic CVs are identified from the sample. In addition, 89 high-inclination systems and 33 CVs showing companion stars are recognized and discussed for their distinct spectral characteristics. Comparisons between CVs from LAMOST and from published catalogs are made in spatial and magnitude distribution, and the difference of their locus in the Gaia color–absolute magnitude diagram (CaMD) are also investigated. More interestingly, for two dwarf novae observed through LAMOST and SDSS in different epochs, their spectra both in quiescence phase and during outburst are exhibited. |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-6256-159-2-AB5962 |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/28712]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.Department of Physics and Astronomy, University of Delaware, Newark, DE 19716, USA 2.School of Information Management & Institute for Astronomical Science, Dezhou University, Dezhou 253023, People’s Republic of China 3.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China 4.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100101, People’s Republic of China; lal@nao.cas.cn, whou@nao.cas.cn |
| 推荐引用方式 GB/T 7714 | Hou,Wen,Luo,A-li,Li,Yin-Bi,et al. Spectroscopically Identified Cataclysmic Variables from the LAMOST Survey. I. The Sample[J]. The Astronomical Journal,2020,159(2). |
| APA | Hou,Wen,Luo,A-li,Li,Yin-Bi,&Qin,Li.(2020).Spectroscopically Identified Cataclysmic Variables from the LAMOST Survey. I. The Sample.The Astronomical Journal,159(2). |
| MLA | Hou,Wen,et al."Spectroscopically Identified Cataclysmic Variables from the LAMOST Survey. I. The Sample".The Astronomical Journal 159.2(2020). |
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来源：国家天文台
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