Browsing Physics and Astronomy by Author "Gillis, Bryan"
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Group-finding with photometric redshifts: The Photo-z Probability Peaks algorithm
Gillis, Bryan (University of Waterloo, 2010-01-25)We present a galaxy group-finding algorithm, the Photo-z Probability Peaks (P3) algorithm, optimized for locating small galaxy groups using photometric redshift data by searching for peaks in the signal-to-noise of the ... -
Measuring the Environmental Dependence of Galaxy Haloes with Weak Lensing
Gillis, Bryan (University of Waterloo, 2013-09-04)We investigate the uses of gravitational lensing for analysing the dark matter haloes around galaxies, comparing galaxies within groups and clusters to those in the field. We consider two cases: when only photometric ...