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

Authors :
Klein, M.
Mohr, J. J.
Bocquet, S.
Aguena, M.
Allen, S. W.
Alves, O.
Ansarinejad, B.
Ashby, M. L. N.
Bacon, D.
Bayliss, M.
Benson, B. A.
Bleem, L. E.
Brodwin, M.
Brooks, D.
Bulbul, E.
Burke, D. L.
Canning, R. E. A.
Carlstrom, J. E.
Rosell, A. Carnero
Carretero, J.
Chang, C. L.
Conselice, C.
Costanzi, M.
Crites, A. T.
da Costa, L. N.
Pereira, M. E. S.
Davis, T. M.
De Vicente, J.
Desai, S.
de Haan, T.
Dobbs, M. A.
Doel, P.
Ferrero, I.
Flores, A. M.
Frieman, J.
George, E. M.
Giannini, G.
Gladders, M. D.
Gonzalez, A. H.
Grandis, S.
Gruen, D.
Gruendl, R. A.
Gutierrez, G.
Halverson, N. W.
Hinton, S. R.
Holder, G. P.
Hollowood, D. L.
Holzapfel, W. L.
Honscheid, K.
Hrubes, J. D.
Huang, N.
James, D. J.
Khullar, G.
Kim, K.
Knox, L.
Kraft, R.
Kéruzoré, F.
Lee, A. T.
Luong-Van, D.
Mahler, G.
Mantz, A.
Marrone, D. P.
Marshall, J. L.
McDonald, M.
McMahon, J. J.
Mena-Fernández, J.
Menanteau, F.
Meyer, S. S.
Miquel, R.
Myles, J.
Padin, S.
Pieres, A.
Malagón, A. A. Plazas
Pryke, C.
Reichardt, C. L.
Reil, K.
Roberson, J.
Romer, A. K.
Romero, C.
Ruhl, J. E.
Saliwanchik, B. R.
Salvati, L.
Sanchez, E.
Saro, A.
Schaffer, K. K.
Schrabback, T.
Schubnell, M.
Sevilla-Noarbe, I.
Sharon, K.
Shirokoff, E.
Smith, M.
Somboonpanyakul, T.
Stalder, B.
Stanford, S. A.
Stark, A. A.
Strazzullo, V.
Suchyta, E.
Swanson, M. E. C.
Tarle, G.
To, C.
Vanderlinde, K.
Vieira, J. D.
von der Linden, A.
Weaverdyck, N.
Williamson, R.
Wiseman, P.
Young, M.
Publication Year :
2023

Abstract

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. The MCMF algorithm allows us to define subsamples of the desired purity with traceable impact on catalog completeness. As an example, we provide two subsamples with S/N>4.25 and S/N>4.5 for which the sample contamination and cleaning-induced incompleteness are both as low as the expected Poisson noise for samples of their size. The subsample with S/N>4.5 has 98% purity and 96% completeness, and will be included in a combined SPT cluster and DES weak-lensing cosmological analysis. We measure the number of false detections in the SPT-SZ candidate list as function of S/N, finding that it follows that expected from assuming Gaussian noise, but with a lower amplitude compared to previous estimates from simulations.<br />Comment: 16 pages, 17 figures, submitted to MNRAS

Details

Database :
arXiv
Publication Type :
Report
Accession number :
edsarx.2309.09908
Document Type :
Working Paper