South Pole Telescope Detections of the Previously Unconfirmed Planck Early Sunyaev–Zel'dovich Clusters in the Southern Hemisphere
We present South Pole Telescope (SPT) observations of the five galaxy cluster candidates in the southern hemisphere which were reported as unconfirmed in the Planck Early Sunyaev-Zel'dovich (ESZ) sample. One cluster candidate, PLCKESZ G255.62-46.16, is located in the 2500 deg^2 SPT SZ survey re...
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ftcaltechauth:oai:authors.library.caltech.edu:24843 2023-05-15T18:22:06+02:00 South Pole Telescope Detections of the Previously Unconfirmed Planck Early Sunyaev–Zel'dovich Clusters in the Southern Hemisphere Story, K. Padin, S. Vieira, J. D. 2011-07-10 application/pdf https://authors.library.caltech.edu/24843/ https://authors.library.caltech.edu/24843/1/Story2011p15503Astrophys_J_Lett.pdf https://resolver.caltech.edu/CaltechAUTHORS:20110815-080643246 en eng American Astronomical Society https://authors.library.caltech.edu/24843/1/Story2011p15503Astrophys_J_Lett.pdf Story, K. and Padin, S. and Vieira, J. D. (2011) South Pole Telescope Detections of the Previously Unconfirmed Planck Early Sunyaev–Zel'dovich Clusters in the Southern Hemisphere. Astrophysical Journal Letters, 735 (2). Art. No. L36. ISSN 2041-8205. doi:10.1088/2041-8205/735/2/L36. https://resolver.caltech.edu/CaltechAUTHORS:20110815-080643246 <https://resolver.caltech.edu/CaltechAUTHORS:20110815-080643246> other Article PeerReviewed 2011 ftcaltechauth https://doi.org/10.1088/2041-8205/735/2/L36 2021-11-11T18:47:28Z We present South Pole Telescope (SPT) observations of the five galaxy cluster candidates in the southern hemisphere which were reported as unconfirmed in the Planck Early Sunyaev-Zel'dovich (ESZ) sample. One cluster candidate, PLCKESZ G255.62-46.16, is located in the 2500 deg^2 SPT SZ survey region and was reported previously as SPT-CL J0411-4819. For the remaining four candidates, which are located outside of the SPT SZ survey region, we performed short, dedicated SPT observations. Each of these four candidates was strongly detected in maps made from these observations, with signal-to-noise ratios ranging from 6.3 to 13.8. We have observed these four candidates on the Magellan-Baade telescope and used these data to estimate cluster redshifts from the red sequence. Resulting redshifts range from 0.24 to 0.46. We report measurements of Y _(0'.75), the integrated Comptonization within a 0'.75 radius, for all five candidates. We also report X-ray luminosities calculated from ROSAT All-Sky Survey catalog counts, as well as optical and improved SZ coordinates for each candidate. The combination of SPT SZ measurements, optical red-sequence measurements, and X-ray luminosity estimates demonstrates that these five Planck ESZ cluster candidates do indeed correspond to real galaxy clusters with redshifts and observable properties consistent with the rest of the ESZ sample. Article in Journal/Newspaper South pole Caltech Authors (California Institute of Technology) South Pole The Astrophysical Journal 735 2 L36 |
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Caltech Authors (California Institute of Technology) |
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English |
description |
We present South Pole Telescope (SPT) observations of the five galaxy cluster candidates in the southern hemisphere which were reported as unconfirmed in the Planck Early Sunyaev-Zel'dovich (ESZ) sample. One cluster candidate, PLCKESZ G255.62-46.16, is located in the 2500 deg^2 SPT SZ survey region and was reported previously as SPT-CL J0411-4819. For the remaining four candidates, which are located outside of the SPT SZ survey region, we performed short, dedicated SPT observations. Each of these four candidates was strongly detected in maps made from these observations, with signal-to-noise ratios ranging from 6.3 to 13.8. We have observed these four candidates on the Magellan-Baade telescope and used these data to estimate cluster redshifts from the red sequence. Resulting redshifts range from 0.24 to 0.46. We report measurements of Y _(0'.75), the integrated Comptonization within a 0'.75 radius, for all five candidates. We also report X-ray luminosities calculated from ROSAT All-Sky Survey catalog counts, as well as optical and improved SZ coordinates for each candidate. The combination of SPT SZ measurements, optical red-sequence measurements, and X-ray luminosity estimates demonstrates that these five Planck ESZ cluster candidates do indeed correspond to real galaxy clusters with redshifts and observable properties consistent with the rest of the ESZ sample. |
format |
Article in Journal/Newspaper |
author |
Story, K. Padin, S. Vieira, J. D. |
spellingShingle |
Story, K. Padin, S. Vieira, J. D. South Pole Telescope Detections of the Previously Unconfirmed Planck Early Sunyaev–Zel'dovich Clusters in the Southern Hemisphere |
author_facet |
Story, K. Padin, S. Vieira, J. D. |
author_sort |
Story, K. |
title |
South Pole Telescope Detections of the Previously Unconfirmed Planck Early Sunyaev–Zel'dovich Clusters in the Southern Hemisphere |
title_short |
South Pole Telescope Detections of the Previously Unconfirmed Planck Early Sunyaev–Zel'dovich Clusters in the Southern Hemisphere |
title_full |
South Pole Telescope Detections of the Previously Unconfirmed Planck Early Sunyaev–Zel'dovich Clusters in the Southern Hemisphere |
title_fullStr |
South Pole Telescope Detections of the Previously Unconfirmed Planck Early Sunyaev–Zel'dovich Clusters in the Southern Hemisphere |
title_full_unstemmed |
South Pole Telescope Detections of the Previously Unconfirmed Planck Early Sunyaev–Zel'dovich Clusters in the Southern Hemisphere |
title_sort |
south pole telescope detections of the previously unconfirmed planck early sunyaev–zel'dovich clusters in the southern hemisphere |
publisher |
American Astronomical Society |
publishDate |
2011 |
url |
https://authors.library.caltech.edu/24843/ https://authors.library.caltech.edu/24843/1/Story2011p15503Astrophys_J_Lett.pdf https://resolver.caltech.edu/CaltechAUTHORS:20110815-080643246 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_relation |
https://authors.library.caltech.edu/24843/1/Story2011p15503Astrophys_J_Lett.pdf Story, K. and Padin, S. and Vieira, J. D. (2011) South Pole Telescope Detections of the Previously Unconfirmed Planck Early Sunyaev–Zel'dovich Clusters in the Southern Hemisphere. Astrophysical Journal Letters, 735 (2). Art. No. L36. ISSN 2041-8205. doi:10.1088/2041-8205/735/2/L36. https://resolver.caltech.edu/CaltechAUTHORS:20110815-080643246 <https://resolver.caltech.edu/CaltechAUTHORS:20110815-080643246> |
op_rights |
other |
op_doi |
https://doi.org/10.1088/2041-8205/735/2/L36 |
container_title |
The Astrophysical Journal |
container_volume |
735 |
container_issue |
2 |
container_start_page |
L36 |
_version_ |
1766201447705214976 |