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New background quasars in the vicinity of the Andromeda Galaxy discovered with the Guoshoujing Telescope (LAMOST)

2010; IOP Publishing; Volume: 10; Issue: 7 Linguagem: Inglês

10.1088/1674-4527/10/7/002

2397-6209

Zhi-Ying Huo, Xiaowei Liu, Haibo Yuan, Huihua Zhang, Yongheng Zhao, Jian-Jun Chen, Zhong-Rui Bai, Haotong Zhang, Huawei Zhang, R. García-Benito, Maosheng Xiang, Hongliang Yan, Juanjuan Ren, Shiwei Sun, Yong Zhang, Yeping Li, Qi-Shuai Lu, You Wang, Jijun Ni, Hai Wang,

Astronomy and Astrophysical Research

We present preliminary analyses of spectra of quasar candidates in two Guoshoujing Telescope (GSJT, formerly named the Large Sky Area Multi-Object Fiber Spectroscopic Telescope - LAMOST) test fields near M 31 where one is close to the optical center of the disk and the other is towards the northeastern outskirts of the halo, obtained during the early stage of the GSJT commissioning in the last season of 2009. Both fields contain background low-redshift quasar candidates selected from the SDSS photometry. In total, 14 new quasars with redshifts up to 2 and i magnitudes between 16.7 and 19.2, are discovered, including 7 within the 2.5° central region of M 31. We briefly discuss the potential applications of these newly discovered bright quasars.