Mathematics – Logic
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20922203g&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #222.03; Bulletin of the American Astronomical Society,
Mathematics
Logic
Scientific paper
The DEEP2 Galaxy Redshift Survey has produced the largest sample of optically selected galaxy groups and clusters currently available at z 1. By comparing the DEEP2 sample to local surveys, it will be possible to learn a great deal about large-scale structure formation and galaxy evolution. In this talk, I will discuss the identification of groups and clusters in DEEP2 and describe an ongoing project to compare DEEP2 groups to the low-redshift 2PIGG group sample from the 2dFGRS. By measuring the mass-to-light ratios of dark matter halos at different redshifts, this work will provide an important means to refine theories of galaxy formation. In addition, by measuring the mass function of groups and clusters, and its evolution from z 1 to the present day, this work will place important new constraints on cosmological parameters, including the equation of state of the dark energy.
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