The Galactic Halo Formation and the Evolution of Bias

Details The Galactic Halo Formation and the Evolution of Bias The Galactic Halo Formation and the Evolution of Bias

Jul 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001rmxac..11..113c&link_type=abstract

"IX Latin American Regional IAU Meeting, "Focal Points in Latin American Astronomy", held in Tonantzintla, Mexico, Nov 9-13, 199

Astronomy and Astrophysics

Astronomy

Scientific paper

We study the evolution of bias in four cosmological models (ΛCDM, OCDM, τCDM, and SCDM). The use of very high-resolution simulations, achieved with the AP3M code, produces dozens of galaxy-size halos inside groups. The groups look like real groups of galaxies. The bias decreases monotonically with redshift for all models and varies from 2 to 3 at z=3.0 on 1 Mpc/h scale for halos with a number density of 0.02 h3 Mpc-3. All models are anti-biased (b<1) at z<1.

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