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The Influence of the Large-scale Environment on Galaxy Property
Wei Yuqing; Wang Lei; Dai Caiping
2016
Source PublicationActa Astronomica Sinica
Volume57Issue:2Pages:127-138
AbstractThe 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.
DOI0001-5245(2016)57:2<127:DCDHJD>2.0.TX;2-Z
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Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/16882
Collection星系宇宙学和暗能量研究团组
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GB/T 7714
Wei Yuqing,Wang Lei,Dai Caiping. The Influence of the Large-scale Environment on Galaxy Property[J]. Acta Astronomica Sinica,2016,57(2):127-138.
APA Wei Yuqing,Wang Lei,&Dai Caiping.(2016).The Influence of the Large-scale Environment on Galaxy Property.Acta Astronomica Sinica,57(2),127-138.
MLA Wei Yuqing,et al."The Influence of the Large-scale Environment on Galaxy Property".Acta Astronomica Sinica 57.2(2016):127-138.
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