Angular Momentum of Protogalaxies in a Hierarchical Scenario

Details Angular Momentum of Protogalaxies in a Hierarchical Scenario Angular Momentum of Protogalaxies in a Hierarchical Scenario

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.246..151t&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 246, NO. 1/SEP1, P. 151, 1990

Mathematics

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Scientific paper

We use numerical simulations of collisionless particles in expanding universe models with different density parameters {OMEGA} in order to simulate local mass density enhancements in a {OMEGA}_b_ = 1 background. We find an anticorrelation of the intrinsic spin of bound objects with the local density. The average dimensionless spin parameter of virialized objects in present high-density regions ρ\ρ_b_ ~10^3^ is a factor of 2 lower than that corresponding to objects in the field. The implications for galaxy formation and the segregation of morphological types are briefly discussed.

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