Halos and Galaxies in the Cosmic Web from Numerical Simulations

Details Halos and Galaxies in the Cosmic Web from Numerical Simulations Halos and Galaxies in the Cosmic Web from Numerical Simulations

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21721407r&link_type=abstract

American Astronomical Society, AAS Meeting #217, #214.07; Bulletin of the American Astronomical Society, Vol. 43, 2011

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We use cosmological simulations to explore the distribution of low mass halos and galaxies within the cosmic web of dark matter. There has been significant focus on the apparent fact that low mass dwarf galaxies are ``missing'' with respect to the numbers of low mass halos in the concordance Lambda Cold Dark Matter (CDM) cosmology. The ``missing'' CDM halos may be present, but dark, or instead, we could live in a warm dark matter universe where low mass halo formation is suppressed. We explore whether the spatial distribution of galaxies in voids and filaments can discriminate between the above astrophysical or cosmological solutions, and what it can reveal about about the relation between galaxy luminosity and halo mass.

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