1. Galaxy Clusters Selected via the Sunyaev–Zel’dovich Effect in the SPTpol 100-square-degree Survey
- Author
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Elizabeth George, A. T. Crites, T. Veach, Amy N. Bender, G. I. Noble, Federico Bianchini, Matt Dobbs, Mark Brodwin, W. B. Everett, N. L. Harrington, S. S. Meyer, K. K. Schaffer, A. E. Lowitz, John E. Carlstrom, Jason E. Austermann, C. L. Chang, T. de Haan, T. M. Crawford, L. M. Mocanu, Lindsey Bleem, Michael McDonald, Dale Li, Joshua Montgomery, Jeff McMahon, Gensheng Wang, Jason Gallicchio, Nathan Whitehorn, Valentine Novosad, Keren Sharon, Graeme Smecher, S. Patil, Michael D. Gladders, Johannes Hubmayr, Robert I. Citron, J. D. Hrubes, Jason W. Henning, A. Saro, Nikhel Gupta, Adrian T. Lee, Adam Anderson, G. Khullar, Benjamin Floyd, Volodymyr Yefremenko, Joaquin Vieira, S. Guns, Steven W. Allen, W. L. K. Wu, J. E. Ruhl, John P. Nibarger, Antony A. Stark, C. Sievers, N. W. Halverson, J. T. Sayre, B. Stalder, Christian L. Reichardt, Kent D. Irwin, Peter A. R. Ade, A. Nadolski, C. Corbett Moran, K. T. Story, K. Vanderlinde, W. L. Holzapfel, Bradford Benson, Sebastian Bocquet, N. Huang, Jessica Avva, A. Gilbert, Stephen Padin, Lloyd Knox, T. Natoli, Gene C. Hilton, James A. Beall, C. Pryke, H. C. Chiang, Carole Tucker, Benjamin Saliwanchik, Gilbert Holder, Huang, N., Bleem, L. E., Stalder, B., Ade, P. A. R., Allen, S. W., Anderson, A. J., Austermann, J. E., Avva, J. S., Beall, J. A., Bender, A. N., Benson, B. A., Bianchini, F., Bocquet, S., Brodwin, M., Carlstrom, J. E., Chang, C. L., Chiang, H. C., Citron, R., Moran, C. Corbett, Crawford, T. M., Crite, A., T., Haan, T. de, Dobbs, M. A., Everett, W., Floyd, B., Gallicchio, J., George, E. M., Gilbert, A., Gladders, M. D., Guns, S., Gupta, N., Halverson, N. W., Harrington, N., Henning, J. W., Hilton, G. C., Holder, G. P., Holzapfel, W. L., Hrubes, J. D., Hubmayr, J., Irwin, K. D., Khullar, G., Knox, L., Lee, A. T., Li, D., Lowitz, A., Mcdonald, M., Mcmahon, J. J., Meyer, S. S., Mocanu, L. M., Montgomery, J., Nadolski, A., Natoli, T., Nibarger, J. P., Noble, G., Novosad, V., Padin, S., Patil, S., Pryke, C., Reichardt, C. L., Ruhl, J. E., Saliwanchik, B. R., Saro, A., Sayre, J. T., Schaffer, K. K., Sharon, K., Sievers, C., Smecher, G., Stark, A. A., Story, K. T., Tucker, C., Vanderlinde, K., Veach, T., Vieira, J. D., Wang, G., Whitehorn, N., Wu, W. L. K., and Yefremenko, V.
- Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO) ,010504 meteorology & atmospheric sciences ,Infrared ,FOS: Physical sciences ,Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astronomy & Astrophysics ,Sunyaev–Zel'dovich effect ,01 natural sciences ,Square (algebra) ,0103 physical sciences ,010303 astronomy & astrophysics ,Galaxy cluster ,Astrophysics::Galaxy Astrophysics ,0105 earth and related environmental sciences ,Physics ,Astrophysics::Instrumentation and Methods for Astrophysics ,Astronomy and Astrophysics ,Redshift ,Galaxy ,Square degree ,South Pole Telescope ,Space and Planetary Science ,astro-ph.CO ,Astronomical and Space Sciences ,Astrophysics - Cosmology and Nongalactic Astrophysics - Abstract
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 $M_{500c} > 2.6 \times 10^{14} M_\odot h^{-1}_{70}$ and $z > 0.25$ 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 $��$K-arcmin at 95 and 150 GHz, respectively) makes it possible to find more galaxy clusters at high redshift and lower mass., 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
- Published
- 2020
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