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Accounting for Baryons in Cosmological Constraints from Cosmic Shear
Andrew R. Zentner, Elisabetta Semboloni, Scott Dodelson +3
One of the most pernicious theoretical systematics facing upcoming gravitational lensing surveys is the uncertainty introduced by the effects of baryons on the power spectrum of th…
SHAM Beyond Clustering: New Tests of Galaxy-Halo Abundance Matching with Galaxy Groups
Andrew P. Hearin, Andrew R. Zentner, Andreas A. Berlind +1
We construct mock catalogs of galaxy groups using subhalo abundance matching (SHAM) and undertake several new tests of the SHAM prescription for the galaxy-dark matter connection.…
Mind the Gap: Tightening the Mass-Richness Relation with Magnitude Gaps
Andrew P. Hearin, Andrew R. Zentner, Jeffrey A. Newman +1
We investigate the potential to improve optical tracers of cluster mass by exploiting measurements of the magnitude gap, m12, defined as the difference between the r-band absolute…