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E+A Galaxy Candidates in and around the Virgo Cluster
Research Notes of the AAS Pub Date : 2021-02-02 , DOI: 10.3847/2515-5172/abded7
Serena Wurmser 1 , Rafid Quayum 2 , Charles Liu 3, 4, 5
Affiliation  

E+A galaxies are post-starburst galaxies that have recently undergone complete quenching of their star formation, making them a valuable source for studying the evolution of galaxies and their environments. Using the Extended Virgo Cluster Catalog, we manually identified 125 “green” and 24 “blue” E+A galaxy candidates within the Virgo Cluster based on their spectral shape, u − r color, lack of Hα emission, and hydrogen Balmer absorption. Interestingly, we found a higher density of E+A galaxy candidates in the Virgo Cluster than that of most other low-redshift clusters, and several regions of particularly high E+A density within the Virgo Cluster. The large number of E+As in and around the Virgo Cluster hints at the influence of a dense galaxy environment on the formation of E+A galaxies, and the potential value of E+A galaxies as a diagnostic tool to study the evolution of clusters.



中文翻译:

处女座星团及其周围的E + A星系候选者

E + A星系是爆炸后的星系,最近已对其恒星形成进行了完全淬灭,这使其成为研究星系及其周围环境的宝贵资料。使用扩展室女座目录,我们人工识别125“绿色”和24“蓝色” E + A星系室女座星系团内基于其光谱形状的候选人,ü  -  [R色,缺乏H的α排放和氢巴尔默吸收。有趣的是,我们发现处女座星团中的E + A星系候选者的密度高于大多数其他低红移星团,并且在处女座星团中有几个E + A密度特别高的区域。处女座星团内部和周围的大量E + A暗示着密集的星系环境对E + A星系形成的影响,以及E + A星系作为研究星团演化的诊断工具的潜在价值。 。

更新日期:2021-02-02
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