The clustering of faint galaxies

The clustering of faint galaxies
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微弱星系团

DOI:
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发表时间:
1991
期刊:
影响因子:
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通讯作者:
P. Guhathakurta
P. Guhathakurta
中科院分区:
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文献类型:
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作者:
G. Efstathiou;G. Bernstein;J. Tyson;N. Katz;P. Guhathakurta

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天空中的深空影像揭示了一群暗淡的蓝色天体,它们可能是红移大于1的原星系。暗星系的聚集程度出奇地弱。对这个结果有几种可能的解释:(1)大多数暗蓝色星系属于一个新的群体,在当前的时代是弱聚集的,本质上是暗淡的;(2)星系团的演化比在简单的引力不稳定性模型中预期的要快得多;或者(3)宇宙的几何形状与爱因斯坦-德西特模型有很大的不同。
Deep images of the sky reveal a population of faint blue objects that may be protogalaxies at redshifts of more than approximately 1. The faint galaxies are surprisingly weakly clustered. There are several possible explanations of this result: (1) the majority of the faint blue galaxies belong to a new population that is weakly clustered and intrinsically faint at the present epoch; (2) galaxy clustering evolves much more rapidly than expected in simple models of gravitational instability; or (3) the geometry of the universe differs significantly from the Einstein-de Sitter model.