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arXiv · 1506.00796

A Sample of E+A Galaxy Candidates in LAMOST Data Released 2

Haifeng Yang·Ali Luo·Xiaoyan Chen·Wen Hou·Jiannan Zhang·Wei Du·Jifu Zhang·Jianghui Cai·Yanxin Guo·Shuo Zhang·Yongheng Zhao·Hong Wu·Tinggui Wang·Shiyin Shen·Ming Yang·Yong Zhang·Yonghui Hou
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Abstract

A sample of 70 E+A galaxies are selected from 37, 206 galaxies in the second data release (DR2) of Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) according to the criteria for E+A galaxies defined by Goto, and each of these objects is further visually identified. In this sample, most objects are low redshift E+A galaxies with z < 0.25, and locate in the high latitude sky area with magnitude among 14 to 18 mag in g, r and i bands. A stellar population analysis for the whole sample indicates that the E+A galaxies are characterized by both young and old stellar populations (SPs), and the metal-rich SPs have relatively higher contributions than the metal-poor ones. Additionally, a morphological classification for these objects is performed based on the images taken from the Sloan Digital Sky Survey (SDSS).

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Haifeng Yang, Ali Luo, Xiaoyan Chen, Wen Hou, Jiannan Zhang, Wei Du, Jifu Zhang, Jianghui Cai, Yanxin Guo, Shuo Zhang, Yongheng Zhao, Hong Wu, Tinggui Wang, Shiyin Shen, Ming Yang, Yong Zhang, Yonghui Hou. 2015-06-02. A Sample of E+A Galaxy Candidates in LAMOST Data Released 2. https://arxiv.org/abs/1506.00796

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