The galaxy luminosity function in the LAMOST Complete Spectroscopic Survey of Pointing Area at the Southern Galactic Cap

作     者：Pin-Song Zhao Hong Wu Cong Kevin Xu Ming Yang Fan Yang Yi-Nan Zhu Man I Lam Jun-Jie Jin Hai-Long Yuan Hao-Tong Zhang Shi-Yin Shen Jian-Rong Shi A-Li Luo Xue-Bing Wu Yong-Heng Zhao Yi-Peng Jing 

作者机构：Key Laboratory of Optical AstronomyNational Astronomical ObservatoriesChinese Academy of SciencesBeijing100101China School of Astronomy and Space ScienceUniversity of Chinese Academy of SciencesBeijing100049China Chinese Academy of Sciences South America Center for AstronomyChina-Chile Joint Center for AstronomyCamino El Observatorio1515Las CondesSantiagoChile IAASARSNational Observatory of AthensVas.Pavlou&I.MetaxaPenteli15236Greece Key Laboratory for Research in Galaxies and CosmologyShanghai Astronomical ObservatoryChinese Academy ofSciencesShanghai200030China Department of AstronomySchool of PhysicsPeking UniversityBeijing100871China School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai200240China 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2019年第19卷第8期

页      面：69-80页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：project is supported by the National Key R&D Program of China (2017YFA0402704) the National Natural Science Foundation of China (Grant Nos. 11733006 and U1531245) the National Science Foundation for Young Scientists of China (Grant No. 11603058) the Guo Shou Jing Telescope Spectroscopic Survey Key Projects support by the National Natural Science Foundation of China (Y811251N01) 

主　　题：galaxies:luminosity function,mass function galaxies:statistics galaxies:distances and redshifts 

摘      要：We present optical luminosity functions(LFs) of galaxies in the0.1 g,0.1 r,0.1 i bands, calculated using data in40 deg2 sky area of the LAMOST Complete Spectroscopic Survey of Pointing Area(LaCoSSPAr) in the Southern Galactic Cap. Redshifts for galaxies brighter than r = 18.1 were obtained mainly with LAMOST. In each band, LFs derived using both parametric and non-parametric maximum likelihood methods agree well with each other. In the0.1 r band, our fitting parameters of the Schechter function are φ*=(1.65 ± 0.36) × 10-2 h3 Mpc-3, M*=-20.69 ± 0.06 mag and α =-1.12 ± 0.08,which agree with previous studies. Separate LFs are also derived for emission line galaxies and absorption line galaxies. The LFs of absorption line galaxies show a dip at0.1 r 18.5 and can be fitted well by a double-Gaussian function, suggesting a bimodality in passive galaxies.