SPT-SZ MCMF: An extension of the SPT-SZ catalog over the DES region

Understand

We present an extension to a Sunyaev-Zel'dovich Effect (SZE) selected cluster catalog based on observations from the South Pole Telescope (SPT); this catalog extends to lower signal-to-noise than the previous SPT-SZ catalog and therefore includes lower mass clusters.

• Optically derived redshifts, centers, richnesses and morphological parameters together with catalog contamination and completeness statistics are extracted using the multi-component matched filter algorithm (MCMF) applied to the S/N>4 SPT-SZ candidate list and the Dark Energy Survey (DES) photometric galaxy catalog.
• The main catalog contains 811 sources above S/N=4, has 91% purity and is 95% complete with respect to the original SZE selection.
• It contains 50% more total clusters and twice as many clusters above z=0.8 in comparison to the original SPT-SZ sample.