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New planetary nebulae in the outskirts of the Andromeda Galaxy discovered with the Guoshoujing Telescope (LAMOST)

Hai-Bo Yuan, Xiao-Wei Liu, Zhi-Ying Huo, 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 Planetary nebulae (PNe) are good tracers of the stellar populations, chemical composition and dynamics of their host galaxies. This paper reports the discovery of new PNe in the outskirts of the Andromeda Galaxy (M 31) with the Guoshoujing Telescope (GSJT, formerly named the Large Sky Area Multi-Object Fiber Spectroscopic Telescope-LAMOST) during its early commissioning phase. In total, 36 candidates selected from SDSS photometry are confirmed in terms of their PN nature, including 17 new discoveries and another 19 previously known emission line objects. Their positions, spectra, radial velocities andm5007 magnitudes are presented. We discuss the potential for detecting more PNe in M31 with GSJT's multi-object spectroscopy and the related applications in studies of the dynamics and chemistry of M31 and its assemblage history.


Keywords galaxies: individual (M 31)—planetary nebulae: general

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