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Article overview
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The Galaxy Group/Cosmology Connections | | Gary A. Mamon
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14 Jun 1994 | | Journal: | Clusters of Galaxies, pp. 291-296 (1994) | | Subject: | astro-ph | | Affiliation: | IAP | | Abstract: | defspose#1{hbox to 0pt{#1hss}} deflta{mathrel{spose{lower 3pthbox{$mathchar"218$}}
aise 2.0pthbox{$mathchar"13C$}}} Groups of galaxies are highly linked to cosmology: 1) groups are tidally destroyed by the tidal field of the cluster they fall into; 2) spherical infall leads to the young cosmo-dynamical state of loose groups, a fundamental surface for groups, $Omega_0 simeq 0.3$, and the mixed nature of compact groups (virialized groups, groups at full collapse, and chance alignments within collapsing loose groups, for decreasing compact group velocity dispersion) ; 3) X-ray analyses lead to $Omega_0 lta 0.5$. | | Source: | arXiv, astro-ph/9406043 | | Services: | Forum | Review | PDF | Favorites | |
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