Search for carbon stars and DZ white dwarfs in SDSS spectra survey through machine learning
文献类型：期刊论文
| 作者 | Si JianMin1,2,3; Luo ALi2,3; Li YinBi2; Zhang JianNan2; Wei Peng2,3; Wu YiHong1 ; Wu FuChao1; Zhao YongHeng2
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| 刊名 | SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
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| 出版日期 | 2014 |
| 卷号 | 57期号:1页码:176-186 |
| 关键词 | machine learning label propagation carbon stars DZ white dwarfs |
| 英文摘要 | Carbon stars and DZ white dwarfs are two types of rare objects in the Galaxy. In this paper, we have applied the label propagation algorithm to search for these two types of stars from Data Release Eight (DR8) of the Sloan Digital Sky Survey (SDSS), which is verified to be efficient by calculating precision and recall. From nearly two million spectra including stars, galaxies and QSOs, we have found 260 new carbon stars in which 96 stars have been identified as dwarfs and 7 identified as giants, and 11 composition spectrum systems (each of them consists of a white dwarf and a carbon star). Similarly, using the label propagation method, we have obtained 29 new DZ white dwarfs from SDSS DR8. Compared with PCA reconstructed spectra, the 29 findings are typical DZ white dwarfs. We have also investigated their proper motions by comparing them with proper motion distribution of 9,374 white dwarfs, and found that they satisfy the current observed white dwarfs by SDSS generally have large proper motions. In addition, we have estimated their effective temperatures by fitting the polynomial relationship between effective temperature and g-r color of known DZ white dwarfs, and found 12 of the 29 new DZ white dwarfs are cool, in which nine are between 6,000 K and 6,600 K, and three are below 6,000 K. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Physics, Multidisciplinary |
| 研究领域[WOS] | Physics |
| 关键词[WOS] | DIGITAL SKY SURVEY ; SUPERNOVA CANDIDATES ; STELLAR SPECTRA ; MILKY-WAY ; LATITUDE ; CATALOG ; COOL ; KPC |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000328879500022 |
| 源URL | [http://ir.ia.ac.cn/handle/173211/2999]  |
| 专题 | 自动化研究所_模式识别国家重点实验室_机器人视觉团队 |
| 作者单位 | 1.Chinese Acad Sci, Inst Automat, Natl Lab Pattern Recognit, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Si JianMin,Luo ALi,Li YinBi,et al. Search for carbon stars and DZ white dwarfs in SDSS spectra survey through machine learning[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2014,57(1):176-186. |
| APA | Si JianMin.,Luo ALi.,Li YinBi.,Zhang JianNan.,Wei Peng.,...&Zhao YongHeng.(2014).Search for carbon stars and DZ white dwarfs in SDSS spectra survey through machine learning.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,57(1),176-186. |
| MLA | Si JianMin,et al."Search for carbon stars and DZ white dwarfs in SDSS spectra survey through machine learning".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 57.1(2014):176-186. |
入库方式： OAI收割
来源：自动化研究所
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