A sample of E+A galaxy candidates in the Second Data Release of LAMOST Survey

A sample of 70 E+A galaxies is selected from 37 206 galaxies in the second data release of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope(LAMOST). This sample is selected according to the criteria for E+A galaxies defined by Goto, and each of these objects is further visually identifi...

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Veröffentlicht in:Research in astronomy and astrophysics 2015-08, Vol.15 (8), p.1414-1423, Article 1414
Hauptverfasser: Yang, Hai-Feng, Luo, A-Li, Chen, Xiao-Yan, Hou, Wen, Zhang, Jian-Nan, Du, Wei, Zhang, Ji-Fu, Cai, Jiang-Hui, Guo, Yan-Xin, Zhang, Shuo, Zhao, Yong-Heng, Wu, Hong, Wang, Ting-Gui, Shen, Shi-Yin, Yang, Ming, Zhang, Yong, Hou, Yong-Hui
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Sprache:eng
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Zusammenfassung:A sample of 70 E+A galaxies is selected from 37 206 galaxies in the second data release of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope(LAMOST). This sample is selected 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 are located in an area of the sky with high Galactic latitude and magnitude from 14 to 18 mag in the g, r and i bands. A stellar population analysis of the whole sample indicates that the E+A galaxies are characterized by both young and old stellar populations(SPs), and the metalrich SPs have relatively higher contributions than the metal-poor ones. Additionally, a morphological classification of these objects is performed based on images taken from the Sloan Digital Sky Survey.
ISSN:1674-4527
2397-6209
DOI:10.1088/1674-4527/15/8/021