Paper

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

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© 2015 National Astronomical Observatories, Chinese Academy of Sciences and IOP Publishing Ltd
, , Citation Hai-Feng Yang et al 2015 Res. Astron. Astrophys. 15 1414 DOI 10.1088/1674-4527/15/8/021

1674-4527/15/8/1414

Abstract

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.

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10.1088/1674-4527/15/8/021