Galaxy Clusters Selected via the Sunyaev–Zel'dovich Effect in the SPTpol 100-square-degree Survey

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 eff...

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Published in:The Astronomical Journal
Main Authors: Huang, N., Moran, C. Corbett, Crites, A. T., Padin, S.
Format: Article in Journal/Newspaper
Language:English
Published: American Astronomical Society 2020
Subjects:
Online Access:https://authors.library.caltech.edu/101373/
https://authors.library.caltech.edu/101373/1/Huang_2020_AJ_159_110.pdf
https://authors.library.caltech.edu/101373/2/1907.09621.pdf
https://resolver.caltech.edu/CaltechAUTHORS:20200219-102007519
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spelling ftcaltechauth:oai:authors.library.caltech.edu:101373 2023-05-15T18:22:48+02:00 Galaxy Clusters Selected via the Sunyaev–Zel'dovich Effect in the SPTpol 100-square-degree Survey Huang, N. Moran, C. Corbett Crites, A. T. Padin, S. 2020-03 application/pdf https://authors.library.caltech.edu/101373/ https://authors.library.caltech.edu/101373/1/Huang_2020_AJ_159_110.pdf https://authors.library.caltech.edu/101373/2/1907.09621.pdf https://resolver.caltech.edu/CaltechAUTHORS:20200219-102007519 en eng American Astronomical Society https://authors.library.caltech.edu/101373/1/Huang_2020_AJ_159_110.pdf https://authors.library.caltech.edu/101373/2/1907.09621.pdf Huang, N. and Moran, C. Corbett and Crites, A. T. and Padin, S. (2020) Galaxy Clusters Selected via the Sunyaev–Zel'dovich Effect in the SPTpol 100-square-degree Survey. Astronomical Journal, 159 (3). Art. No. 110. ISSN 1538-3881. doi:10.3847/1538-3881/ab6a96. https://resolver.caltech.edu/CaltechAUTHORS:20200219-102007519 <https://resolver.caltech.edu/CaltechAUTHORS:20200219-102007519> other Article PeerReviewed 2020 ftcaltechauth https://doi.org/10.3847/1538-3881/ab6a96 2021-11-18T18:53:41Z 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 two 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 z ≥ 1.0, with a maximum confirmed redshift of z_(max) = 1.38±0.10. We expect this catalog to contain every galaxy cluster with M_(500c) > 2.6×10¹⁴M⊙h⁻¹₇₀ 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) > 2.7×10¹⁴M⊙h⁻¹₇₀. Compared to previous SPT works, the increased depth of the millimeter-wave data (11.2 and 6.5 μK-arcmin at 95 and 150 GHz, respectively) makes it possible to find more galaxy clusters at high redshift and lower mass. Article in Journal/Newspaper South pole Caltech Authors (California Institute of Technology) South Pole The Astronomical Journal 159 3 110
institution Open Polar
collection Caltech Authors (California Institute of Technology)
op_collection_id ftcaltechauth
language English
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 two 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 z ≥ 1.0, with a maximum confirmed redshift of z_(max) = 1.38±0.10. We expect this catalog to contain every galaxy cluster with M_(500c) > 2.6×10¹⁴M⊙h⁻¹₇₀ 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) > 2.7×10¹⁴M⊙h⁻¹₇₀. Compared to previous SPT works, the increased depth of the millimeter-wave data (11.2 and 6.5 μK-arcmin at 95 and 150 GHz, respectively) makes it possible to find more galaxy clusters at high redshift and lower mass.
format Article in Journal/Newspaper
author Huang, N.
Moran, C. Corbett
Crites, A. T.
Padin, S.
spellingShingle Huang, N.
Moran, C. Corbett
Crites, A. T.
Padin, S.
Galaxy Clusters Selected via the Sunyaev–Zel'dovich Effect in the SPTpol 100-square-degree Survey
author_facet Huang, N.
Moran, C. Corbett
Crites, A. T.
Padin, S.
author_sort Huang, N.
title Galaxy Clusters Selected via the Sunyaev–Zel'dovich Effect in the SPTpol 100-square-degree Survey
title_short Galaxy Clusters Selected via the Sunyaev–Zel'dovich Effect in the SPTpol 100-square-degree Survey
title_full Galaxy Clusters Selected via the Sunyaev–Zel'dovich Effect in the SPTpol 100-square-degree Survey
title_fullStr Galaxy Clusters Selected via the Sunyaev–Zel'dovich Effect in the SPTpol 100-square-degree Survey
title_full_unstemmed Galaxy Clusters Selected via the Sunyaev–Zel'dovich Effect in the SPTpol 100-square-degree Survey
title_sort galaxy clusters selected via the sunyaev–zel'dovich effect in the sptpol 100-square-degree survey
publisher American Astronomical Society
publishDate 2020
url https://authors.library.caltech.edu/101373/
https://authors.library.caltech.edu/101373/1/Huang_2020_AJ_159_110.pdf
https://authors.library.caltech.edu/101373/2/1907.09621.pdf
https://resolver.caltech.edu/CaltechAUTHORS:20200219-102007519
geographic South Pole
geographic_facet South Pole
genre South pole
genre_facet South pole
op_relation https://authors.library.caltech.edu/101373/1/Huang_2020_AJ_159_110.pdf
https://authors.library.caltech.edu/101373/2/1907.09621.pdf
Huang, N. and Moran, C. Corbett and Crites, A. T. and Padin, S. (2020) Galaxy Clusters Selected via the Sunyaev–Zel'dovich Effect in the SPTpol 100-square-degree Survey. Astronomical Journal, 159 (3). Art. No. 110. ISSN 1538-3881. doi:10.3847/1538-3881/ab6a96. https://resolver.caltech.edu/CaltechAUTHORS:20200219-102007519 <https://resolver.caltech.edu/CaltechAUTHORS:20200219-102007519>
op_rights other
op_doi https://doi.org/10.3847/1538-3881/ab6a96
container_title The Astronomical Journal
container_volume 159
container_issue 3
container_start_page 110
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