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题名: The Influence of the Large-scale Environment on Galaxy Property
作者: Wei Yuqing; Wang Lei; Dai Caiping
刊名: Acta Astronomica Sinica
出版日期: 2016
卷号: 57, 期号:2, 页码:127-138
DOI: 0001-5245(2016)57:2<127:DCDHJD>2.0.TX;2-Z
英文摘要: The properties of star formation in galaxies and their dependence on environment play an important role in understanding the formation and evolution of galaxies. Using the galaxy sample of the Sloan Digital Sky Survey (SDSS), different groups have studied the physical property and the large-scale environment of galaxies. Here we use the filament catalog from Tempel et al. and classified galaxies catalog from Wang et al., considering the affect of shape of galaxies, high and low local density environment, and central (satellite) galaxies. It is found that the properties of galaxies and the large-scale environment are related: the SSFR (specific star formation rate) and SFR (star formation rate) strongly depend on large-scale environment only for spiral galaxies and satellite galaxies, but this dependence is very weak for elliptical galaxies and the central galaxies, and the influence of large-scale environment on galaxies in low density region is more sensitive than that in high density region. The above conclusion remains valid even for the galaxies with the same mass. In addition, the SSFR distributions from Tempel et al.'s catalog and Wang et al.'s catalog are not entirely consistent.
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内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/16882
Appears in Collections:星系宇宙学和暗能量研究团组_期刊论文

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