Addition To C=N Bonds

Roos, Gregory

doi:10.1016/b978-0-12-417034-6.00010-4

Cited by 1 publication

(1 citation statement)

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“…Early studies of merging galaxies (e.g. Roos & Norman 1979;Aarseth & Fall 1980;Garcia-Gomez et al 1996) suggest that the criteria for galaxies to merge depend on the masses and radii of the progenitor galaxies, and their relative velocities, spins, and separations. For example, Garcia-Gomez et al (1996) obtained a merger criterion from empirical fits to N -body simulations giving…”

Section: Subclusters and Mergersmentioning

confidence: 99%

Shapes and Probabilities of Galaxy Clusters

Yang

Saslaw

2012

ApJ

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We develop a general theory for estimating the probability that a galaxy cluster of a given shape exists. The theory is based on the observed result that the distribution of galaxies is very close to quasi-equilibrium, in both its linear and nonlinear regimes. This places constraints on the spatial configuration of a cluster of galaxies in quasi-equilibrium. In particular, we show that that a cluster of galaxies may be described as a collection of nearly virialized subclusters of approximately the same mass. Clusters that contain more than 10 subclusters are very likely to be completely virialized. Using our theory, we develop a method for comparing probabilities of different spatial configurations of subclusters. As an illustrative example, we show that a cluster of galaxies arranged in a line is more likely to occur than a cluster of galaxies arranged in a ring.

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Section: Subclusters and Mergersmentioning

confidence: 99%