Galaxy Number Counts Applied to a Semi-Analytic Galaxy Model in the Millennium Run Simulation

Details Galaxy Number Counts Applied to a Semi-Analytic Galaxy Model in the Millennium Run Simulation Galaxy Number Counts Applied to a Semi-Analytic Galaxy Model in the Millennium Run Simulation

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21540904b&link_type=abstract

American Astronomical Society, AAS Meeting #215, #409.04; Bulletin of the American Astronomical Society, Vol. 42, p.233

Astronomy and Astrophysics

Astronomy

Scientific paper

The Millennium Run simulation used more than 10 billion particles to trace the evolution of the dark matter distribution in a ΛCDM cosmology in a cubic region of the Universe over 2 billion light-years on a side. This data was used by Croton et al. as the basis of a semi-analytic galaxy model, allowing the region to be populated with more than 9 million galaxies brighter than Mr = -17.4. We visually analyze this galaxy catalog searching for significant voids and then apply galaxy number count (GNC) analysis to the lines-of-sight to these voids. Using Wolf plots, we investigate whether GNC analysis would allow us to locate voids within the sample without the need to first find them visually.

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