Galaxy Clusters Selected via the Sunyaev-Zel'dovich Effect in the SPTpol 100-Square-Degree Survey
Creators: name: Huang, N.
name: Bleem, L. E.
name: Stalder, B.
name: Ade, P. A. R.
name: Allen, S. W.
name: Anderson, A. J.
name: Austermann, J. E.
name: Avva, J. S.
name: Beall, J. A.
name: Bender, A. N.
name: Benson, B. A.
name: Bianchini, F.
name: Bocquet, S.
name: Brodwin, M.
name: Carlstrom, J. E.
name: Chang, C. L.
name: Chiang, H. C.
name: Citron, R.
name: Moran, C. Corbett
name: Crawford, T. M.
name: Crites, A. T.
name: de Haan, T.
name: Dobbs, M. A.
name: Everett, W.
name: Floyd, B.
name: Gallicchio, J.
name: George, E. M.
name: Gilbert, A.
name: Gladders, M. D.
name: Guns, S.
name: Gupta, N.
name: Halverson, N. W.
name: Harrington, N.
name: Henning, J. W.
name: Hilton, G. C.
name: Holder, G. P.
name: Holzapfel, W. L.
name: Hrubes, J. D.
name: Hubmayr, J.
name: Irwin, K. D.
name: Khullar, G.
name: Knox, L.
name: Lee, A. T.
name: Li, D.
name: Lowitz, A.
name: McDonald, M.
name: McMahon, J. J.
name: Meyer, S. S.
name: Mocanu, L. M.
name: Montgomery, J.
name: Nadolski, A.
name: Natoli, T.
name: Nibarger, J. P.
name: Noble, G.
name: Novosad, V.
name: Padin, S.
name: Patil, S.
name: Pryke, C.
name: Reichardt, C. L.
name: Ruhl, J. E.
name: Saliwanchik, B. R.
name: Saro, A.
name: Sayre, J. T.
name: Schaffer, K. K.
name: Sharon, K.
name: Sievers, C.
name: Smecher, G.
name: Stark, A. A.
name: Story, K. T.
name: Tucker, C.
name: Vanderlinde, K.
name: Veach, T.
name: Vieira, J. D.
name: Wang, G.
name: Whitehorn, N.
name: Wu, W. L. K.
name: Yefremenko, V.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: We present a catalog of galaxy cluster candidates detected in 100 square degrees surveyed with the SPTpol receiver on the South Pole Telescope. The catalog contains 89 candidates detected with a signal-to-noise ratio greater than 4.6. The candidates are selected using the Sunyaev-Zel'dovich effect at 95 and 150 GHz. Using both space- and ground-based optical and infrared telescopes, we have confirmed 81 candidates as galaxy clusters. We use these follow-up images and archival images to estimate photometric redshifts for 66 galaxy clusters and spectroscopic observations to obtain redshifts for 13 systems. An additional 2 galaxy clusters are confirmed using the overdensity of near-infrared galaxies only, and are presented without redshifts. We find that 15 candidates (18% of the total sample) are at redshift of $z \geq 1.0$, with a maximum confirmed redshift of $z_{\rm{max}} = 1.38 \pm 0.10$. We expect this catalog to contain every galaxy cluster with $M_{500c} &gt; 2.6 \times 10^{14} M_\odot h^{-1}_{70}$ and $z &gt; 0.25$ in the survey area. The mass threshold is approximately constant above $z = 0.25$, and the complete catalog has a median mass of approximately $ M_{500c} = 2.7 \times 10^{14} M_\odot h^{-1}_{70}$. Compared to previous SPT works, the increased depth of the millimeter-wave data (11.2 and 6.5 $μ$K-arcmin at 95 and 150 GHz, respectively) makes it possible to find more galaxy clusters at high redshift and lower mass.
description: 21 pages, 7 figures, associated data available at http://pole.uchicago.edu/public/data/sptsz-clusters. V2 was accepted to the AJ, and includes minor changes requested by the reviewer