The Relation of Compact Groups of Galaxies with Larger-scale Structures

Details The Relation of Compact Groups of Galaxies with Larger-scale Structures The Relation of Compact Groups of Galaxies with Larger-scale Structures

2004-06-14

arxiv.org/abs/astro-ph/0406327v1

Astronomy and Astrophysics

Astrophysics

10 pages, 3 figures; to appear in "Nearby Large-Scale Structures and the Zone of Avoidance", 2004 ASP Conference Series, eds.

Scientific paper

We show that Compact Groups of Galaxies (CGs) are frequently associated with larger-scale structures, and such associations become more frequent for CGs selected by the same criteria at higher redshifts. Our findings suggest that CGs are an intrinsic part of the cosmological structure formation process and are consistent with the LambdaCDM (or "concordance") model, but only if galaxy formation is a biased process.

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