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The SPTpol Extended Cluster Survey

Author(s): Bleem, LE; Bocquet, S; Stalder, B; Gladders, MD; Ade, PAR; et al

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Abstract: We describe the observations and resultant galaxy cluster catalog from the 2770 deg(2) SPTpol Extended Cluster Survey (SPT-ECS). Clusters are identified via the Sunyaev-Zel’dovich (SZ) effect and confirmed with a combination of archival and targeted follow-up data, making particular use of data from the Dark Energy Survey (DES). With incomplete follow-up we have confirmed as clusters 244 of 266 candidates at a detection significance xi >= 5 and an additional 204 systems at 4 xi z = 0.49, and we have identified 44 strong gravitational lenses in the sample thus far. Radio data are used to characterize contamination to the SZ signal; the median contamination for confirmed clusters is predicted to be similar to 1% of the SZ signal at the xi > 4 threshold, and 10% of their measured SZ flux. We associate SZ-selected clusters, from both SPT-ECS and the SPT-SZ survey, with clusters from the DES redMaPPer sample, and we find an offset distribution between the SZ center and central galaxy in general agreement with previous work, though with a larger fraction of clusters with significant offsets. Adopting a fixed Planck-like cosmology, we measure the optical richness-SZ mass ( <CDATA <i ) relation and find it to be 28% shallower than that from a weak-lensing analysis of the DES data-a difference significant at the 4 sigma level-with the relations intersecting at lambda = 60. The SPT-ECS cluster sample will be particularly useful for studying the evolution of massive clusters and, in combination with DES lensing observations and the SPT-SZ cluster sample, will be an important component of future cosmological analyses.
Publication Date: Mar-2020
Electronic Publication Date: 5-Mar-2020
Citation: Bleem, LE, Bocquet, S, Stalder, B, Gladders, MD, Ade, PAR, Allen, SW, Anderson, AJ, Annis, J, Ashby, MLN, Austermann, JE, Avila, S, Avva, JS, Bayliss, M, Beall, JA, Bechtol, K, Bender, AN, Benson, BA, Bertin, E, Bianchini, F, Blake, C, Brodwin, M, Brooks, D, Buckley-Geer, E, Burke, DL, Carlstrom, JE, Rosell, A Carnero, Carrasco Kind, M, Carretero, J, Chang, CL, Chiang, HC, Citron, R, Moran, C Corbett, Costanzi, M, Crawford, TM, Crites, AT, da Costa, LN, de Haan, T, De Vicente, J, Desai, S, Diehl, HT, Dietrich, JP, Dobbs, MA, Eifler, TF, Everett, W, Flaugher, B, Floyd, B, Frieman, J, Gallicchio, J, Garcia-Bellido, J, George, EM, Gerdes, DW, Gilbert, A, Gruen, D, Gruendl, RA, Gschwend, J, Gupta, N, Gutierrez, G, Halverson, NW, Harrington, N, Henning, JW, Heymans, C, Holder, GP, Hollowood, DL, Holzapfel, WL, Honscheid, K, Hrubes, JD, Huang, N, Hubmayr, J, Irwin, KD, James, DJ, Jeltema, T, Joudaki, S, Khullar, G, Klein, M, Knox, L, Kuropatkin, N, Lee, AT, Li, D, Lidman, C, Lowitz, A, MacCrann, N, Mahler, G, Maia, MAG, Marshall, JL, McDonald, M, McMahon, JJ, Melchior, P, Menanteau, F, Meyer, SS, Miquel, R, Mocanu, LM, Mohr, JJ, Montgomery, J, Nadolski, A, Natoli, T, Nibarger, JP, Noble, G, Novosad, V, Padin, S, Palmese, A, Parkinson, D, Patil, S, Paz-Chinchon, F, Plazas, AA, Pryke, C, Ramachandra, NS, Reichardt, CL, Remolina Gonzalez, JD, Romer, AK, Roodman, A, Ruhl, JE, Rykoff, ES, Saliwanchik, BR, Sanchez, E, Saro, A, Sayre, JT, Schaffer, KK, Schrabback, T, Serrano, S, Sharon, K, Sievers, C, Smecher, G, Smith, M, Soares-Santos, M, Stark, AA, Story, KT, Suchyta, E, Tarle, G, Tucker, C, Vanderlinde, K, Veach, T, Vieira, JD, Wang, G, Weller, J, Whitehorn, N, Wu, WLK, Yefremenko, V, Zhang, Y. (2020). The SPTpol Extended Cluster Survey. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 247 (10.3847/1538-4365/ab6993
DOI: doi:10.3847/1538-4365/ab6993
ISSN: 0067-0049
EISSN: 1538-4365
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Type of Material: Journal Article
Version: Final published version. Article is made available in OAR by the publisher's permission or policy.

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