SZ galaxy clusters from the ACTPol

The clusters were detected as SZ decrements by applying a matched filter to 148GHz maps that combine the original ACT equatorial survey with data from the first two observing seasons using the ACTPol receiver. Optical/IR confirmation and redshift measurements come from a combination of large public surveys and our own follow-up observations.

Where necessary, we measured photometric redshifts for clusters using a pipeline that achieves accuracy {Delta}z/(1+z)=0.015 when tested on Sloan Digital Sky Survey data. Under the assumption that clusters can be described by the so-called universal pressure profile (UPP) and its associated mass scaling law, the full signal-to-noise ratio > 4 sample spans the mass range 1.6<M_500c_^UPP^/10^14^M_{sun}_<9.1, with median M_500c_^UPP^=3.1x10^14^M_{sun}_.