학술논문
The SPTpol Extended Cluster Survey
Document Type
Working Paper
Author
Bleem, L. E.; Bocquet, S.; Stalder, B.; Gladders, M. D.; Ade, P. A. R.; Allen, S. W.; Anderson, A. J.; Annis, J.; Ashby, M. L. N.; Austermann, J. E.; Avila, S.; Avva, J. S.; Bayliss, M.; Beall, J. A.; Bechtol, K.; Bender, A. N.; Benson, B. A.; Bertin, E.; Bianchini, F.; Blake, C.; Brodwin, M.; Brooks, D.; Buckley-Geer, E.; Burke, D. L.; Carlstrom, J. E.; Rosell, A. Carnero; Kind, M. Carrasco; Carretero, J.; Chang, C. L.; Chiang, H. C.; Citron, R.; Moran, C. Corbett; Costanzi, M.; Crawford, T. M.; Crites, A. T.; da Costa, L. N.; de Haan, T.; De Vicente, J.; Desai, S.; Diehl, H. T.; Dietrich, J. P.; Dobbs, M. A.; Eifler, T. F.; Everett, W.; Flaugher, B.; Floyd, B.; Frieman, J.; Gallicchio, J.; García-Bellido, J.; George, E. M.; Gerdes, D. W.; Gilbert, A.; Gruen, D.; Gruendl, R. A.; Gschwend, J.; Gupta, N.; Gutierrez, G.; Halverson, N. W.; Harrington, N.; Henning, J. W.; Heymans, C.; Holder, G. P.; Hollowood, D. L.; Holzapfel, W. L.; Honscheid, K.; Hrubes, J. D.; Huang, N.; Hubmayr, J.; Irwin, K. D.; James, D. J.; Jeltema, T.; Joudaki, S.; Khullar, G.; Klein, M.; Knox, L.; Kuropatkin, N.; Lee, A. T.; Li, D.; Lidman, C.; Lowitz, A.; MacCrann, N.; Mahler, G.; Maia, M. A. G.; Marshall, J. L.; McDonald, M.; McMahon, J. J.; Melchior, P.; Menanteau, F.; Meyer, S. S.; Miquel, R.; Mocanu, L. M.; Mohr, J. J.; Montgomery, J.; Nadolski, A.; Natoli, T.; Nibarger, J. P.; Noble, G.; Novosad, V.; Padin, S.; Palmese, A.; Parkinson, D.; Patil, S.; Paz-Chinchón, F.; Plazas, A. A.; Pryke, C.; Ramachandra, N. S.; Reichardt, C. L.; González, J. D. Remolina; Romer, A. K.; Roodman, A.; Ruhl, J. E.; Rykoff, E. S.; Saliwanchik, B. R.; Sanchez, E.; Saro, A.; Sayre, J. T.; Schaffer, K. K.; Schrabback, T.; Serrano, S.; Sharon, K.; Sievers, C.; Smecher, G.; Smith, M.; Soares-Santos, M.; Stark, A. A.; Story, K. T.; Suchyta, E.; Tarle, G.; Tucker, C.; Vanderlinde, K.; Veach, T.; Vieira, J. D.; Wang, G.; Weller, J.; Whitehorn, N.; Wu, W. L. K.; Yefremenko, V.; Zhang, Y.
Source
Subject
Language
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 followup we have confirmed as clusters 244 of 266 candidates at a detection significance $\xi \ge 5$ and an additional 204 systems at $4<\xi<5$. The confirmed sample has a median mass of $M_{500c} \sim {4.4 \times 10^{14} M_\odot h_{70}^{-1}}$, a median redshift of $z=0.49$, 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 $\sim$1% of the SZ signal at the $\xi>4$ threshold, and $<4\%$ of clusters have a predicted contamination $>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 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-to-SZ-mass ($\lambda-M$) 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.
Comment: 49 pages, 14 figures, 10 tables. Minor changes to match accepted version in ApJS
Comment: 49 pages, 14 figures, 10 tables. Minor changes to match accepted version in ApJS