干旱区生态环境知识资源中心(Arid): Eight new quasars discovered by the Guoshoujing Telescope (LAMOST) in one extragalactic field

Arid

DOI	10.1088/1674-4527/10/8/004
	Eight new quasars discovered by the Guoshoujing Telescope (LAMOST) in one extragalactic field
	Wu Xuebing; Jia Zhendong; Chen Zhaoyu; Zuo Wenwen; Zhao Yongheng; Luo Ali; Bai Zhongrui; Chen Jianjun; Zhang Haotong; Yan Hongliang; Ren Juanjuan; Sun Shiwei; Hong Wu; Yong Zhang; Li Yeping; Lu Qishuai; You Wang; Ni Jijun; Hai Wang; Xu Kong; Shen Shiyin
来源期刊	Research in Astronomy and Astrophysics
ISSN	1674-4527
出版年	2010
卷号	10 期号:8 页码:745-752
英文摘要	We report the discovery of eight new quasars in one extragalactic field (a five-degree field centered at RA=08~h58~m08.2~s, Dec=01°32'29.7") with the Guoshoujing Telescope (LAMOST) commissioning observations made on 2009 December 18. These quasars, with i magnitudes from 16.44 to 19.34 and redshifts from 0.898 to 2.773, were not identified in the SDSS spectroscopic survey, though six of them with redshifts less than 2.5 were selected as quasar targets in SDSS. Except for one source without near-IR Y-band data, seven of these eight new quasars satisfy a newly proposed quasar selection criterion involving both near-IR and optical colors. Two of them were found in the 'redshift desert' for quasars (z from 2.2 to 3), indicating that the new criterion is efficient for uncovering missing quasars with similar optical colors to stars. Although LAMOST encountered some problems during the commissioning observations, we were still able to identify 38 other known SDSS quasars in this field, with i magnitudes from 16.24 to 19.10 and redshifts from 0.297 to 4.512. Our identifications imply that a substantial fraction of quasars may be missing in previous quasar surveys. The implication of our results to the future LAMOST quasar survey is discussed
英文关键词	quasars general - quasars emission lines - galaxies active
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Astronomy & Astrophysics
CSCD记录号	CSCD:3971815
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335068
作者单位	Wu Xuebing, Department of Astronomy, Peking University, Beijing 100871, China.; Jia Zhendong, Department of Astronomy, Peking University, Beijing 100871, China.; Chen Zhaoyu, Department of Astronomy, Peking University, Beijing 100871, China.; Zuo Wenwen, Department of Astronomy, Peking University, Beijing 100871, China.; Zhao Yongheng, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China.; Luo Ali, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China.; Bai Zhongrui, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China.; Chen Jianjun, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China.; Zhang Haotong, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China.; Yan Hongliang, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China.; Ren Juanjuan, National Astronomical Observatories, Chinese Academy of Scien...
推荐引用方式 GB/T 7714	Wu Xuebing,Jia Zhendong,Chen Zhaoyu,et al. Eight new quasars discovered by the Guoshoujing Telescope (LAMOST) in one extragalactic field[J],2010,10(8):745-752.
APA	Wu Xuebing.,Jia Zhendong.,Chen Zhaoyu.,Zuo Wenwen.,Zhao Yongheng.,...&Shen Shiyin.(2010).Eight new quasars discovered by the Guoshoujing Telescope (LAMOST) in one extragalactic field.Research in Astronomy and Astrophysics,10(8),745-752.
MLA	Wu Xuebing,et al."Eight new quasars discovered by the Guoshoujing Telescope (LAMOST) in one extragalactic field".Research in Astronomy and Astrophysics 10.8(2010):745-752.