Capability of Quasar Selection by Combining SCUSS and SDSS Observations
文献类型：期刊论文
| 作者 | Zou, Hu1 ; Wu, Xue-Bing2,3; Zhou, Xu1; Wang, Shu2; Jiang, Linhua3; Fan, Xiaohui3,4; Fan, Zhou1; Jiang, Zhaoji1; Jing, Yipeng5; Lesser, Michael4
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| 刊名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
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| 出版日期 | 2015-02-01 |
| 卷号 | 127期号:948页码:94-101 |
| 英文摘要 | The South Galactic Cap u-band Sky Survey (SCUSS) provides a deep u-band imaging of about 5000 deg(2) in south Galactic cap. It is about 1.5 mag deeper than the SDSS u-band. In this article, we evaluate the capability of quasar selection using both SCUSS and SDSS data, based on considerations of the deep SCUSS u-band imaging and two-epoch u-band variability. We find that the combination of the SCUSS u-band and the SDSS griz-band allows us to select more faint quasars and more quasars at redshift around 2.2 than the selection that uses only the SDSS ugriz data. Quasars have significant u-band variabilities. The fraction of quasars with large two-epoch variability is much higher than that of stars. The selection by variability can select both low-redshift quasars with ultraviolet excess and mid-redshift (2 < z < 3.5) quasars where quasar selection by optical colors is inefficient. The above two selections are complementary and make full use of the SCUSS u-band advantages. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000349769800002 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6652]  |
| 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.Peking Univ, Sch Phys, Dept Astron, Beijing 100871, Peoples R China 3.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China 4.Univ Arizona, Steward Observ, Tucson, AZ 85721 USA 5.Shanghai Jiao Tong Univ, Dept Phys & Astron, Ctr Astron & Astrophys, Shanghai 200240, Peoples R China 6.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zou, Hu,Wu, Xue-Bing,Zhou, Xu,et al. Capability of Quasar Selection by Combining SCUSS and SDSS Observations[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,2015,127(948):94-101. |
| APA | Zou, Hu.,Wu, Xue-Bing.,Zhou, Xu.,Wang, Shu.,Jiang, Linhua.,...&Zhou, Zhimin.(2015).Capability of Quasar Selection by Combining SCUSS and SDSS Observations.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,127(948),94-101. |
| MLA | Zou, Hu,et al."Capability of Quasar Selection by Combining SCUSS and SDSS Observations".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC 127.948(2015):94-101. |
入库方式： OAI收割
来源：国家天文台
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