Classification study of WISE infrared sources: identification of candidate asymptotic giant branch stars
文献类型：期刊论文
| 作者 | Tu, Xun1,2,3; Wang, Zhong-Xiang1,2 |
| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2013-03-01 |
| 卷号 | 13期号:3页码:323-333 |
| 关键词 | stars: AGB and post-AGB infrared: stars stars: carbon |
| 英文摘要 | In the Wide-field Infrared Survey Explorer (WISE) all-sky source catalog there are 76 million mid-infrared point sources that were detected in the first three WISE bands and have association with only one 2MASS near-IR source within 3 ''. We search for their identifications in the SIMBAD database and find 3.2 million identified sources. Based on these known sources, we establish three criteria for selecting candidate asymptotic giant branch (AGB) stars in the Galaxy, which are three defined zones in a color-color diagram, Galactic latitude broken vertical bar b| <= 20 degrees, and "corrected" WISE third- bandW3 (c)<= 11. Applying these criteria to theWISE+ 2MASS sources, 1.37 million of them are selected. We analyze the WISE third- bandW3 distribution of the selected sources, and further establish that W3 <= 8 is required in order to exclude a large fraction of normal stars from them. We therefore find 0.47 million candidate AGB stars in our Galaxy from the WISE source catalog. Using W3(c), we estimate their distances and derive their Galactic distributions. The candidates are generally distributed around the Galactic center uniformly, with 68% (1-sigma) of them within approximately 8 kpc. We discuss the idea that optical spectroscopy can be used to verify the C- rich AGB stars in our candidates, and thus a fraction of them (similar to 10%) will be good targets for the Large Sky Area Multi-Object Fiber Spectroscopic Telescope ( LAMOST) survey that is planned to start in fall of 2012. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | LARGE-MAGELLANIC-CLOUD ; SHORT-WAVELENGTH SPECTROMETER ; ALL-SKY SURVEY ; AGB STARS ; MICRON SPECTRA ; CARBON STARS ; DUST ; EVOLUTION ; DISTRIBUTIONS ; EXTINCTION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000316111400007 |
| 公开日期 | 2014-12-25 |
| 源URL | [http://119.78.226.72//handle/331011/15414]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China 2.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tu, Xun,Wang, Zhong-Xiang. Classification study of WISE infrared sources: identification of candidate asymptotic giant branch stars[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2013,13(3):323-333. |
| APA | Tu, Xun,&Wang, Zhong-Xiang.(2013).Classification study of WISE infrared sources: identification of candidate asymptotic giant branch stars.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,13(3),323-333. |
| MLA | Tu, Xun,et al."Classification study of WISE infrared sources: identification of candidate asymptotic giant branch stars".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 13.3(2013):323-333. |
入库方式： OAI收割
来源：上海天文台
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