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

Zhi-Ying Huo, Xiao-Wei Liu, Hai-Bo Yuan, Hui-Hua Zhang, Yong-Heng Zhao, Jian-Jun Chen, Zhong-Rui Bai, Hao-Tong Zhang, Hua-Wei Zhang, Ruben García-Benito, Mao-Sheng Xiang, Hong-Liang Yan, Juan-Juan Ren, Shi-Wei Sun, Yong Zhang, Ye-Ping Li, Qi-Shuai Lu, You Wang, Ji-Jun Ni, Hai Wang


Abstract 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 M31 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 M31. We briefly discuss the potential applications of these newly discovered bright quasars.


Keywords galaxies: individual (M31)—quasars: general—quasars: emission lines

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