THE SWIFT X-RAY TELESCOPE CLUSTER SURVEY. III. CLUSTER CATALOG FROM 2005-2012 ARCHIVAL DATA
We present the Swift X-ray Cluster Survey (SWXCS) catalog obtained using archival data from the X-ray telescope (XRT) on board the Swift satellite acquired from 2005 February to 2012 November, extending the first release of the SWXCS. The catalog provides positions, soft fluxes, and, when possible,...
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| creator | Liu, Teng Tozzi, Paolo Tundo, Elena Moretti, Alberto Rosati, Piero Wang, Jun-Xian Tagliaferri, Gianpiero Campana, Sergio Giavalisco, Mauro |
| description | We present the Swift X-ray Cluster Survey (SWXCS) catalog obtained using archival data from the X-ray telescope (XRT) on board the Swift satellite acquired from 2005 February to 2012 November, extending the first release of the SWXCS. The catalog provides positions, soft fluxes, and, when possible, optical counterparts for a flux-limited sample of X-ray group and cluster candidates. We consider the fields with Galactic latitude |b| > 20[degrees] to avoid high H I column densities. We discard all of the observations targeted at groups or clusters of galaxies, as well as particular extragalactic fields not suitable to search for faint extended sources. We finally select ~3000 useful fields covering a total solid angle of ~400 deg super(2). We identify extended source candidates in the soft-band (0.5-2 keV) images of these fields using the software EXSdetect, which is specifically calibrated for the XRT data. Extensive simulations are used to evaluate contamination and completeness as a function of the source signal, allowing us to minimize the number of spurious detections and to robustly assess the selection function. Our catalog includes 263 candidate galaxy clusters and groups down to a flux limit of 7 x 10 super(-15) erg cm super(-2) s super(-1) in the soft band, and the logN-logS is in very good agreement with previous deep X-ray surveys. The final list of sources is cross-correlated with published optical, X-ray, and Sunyaev-Zeldovich catalogs of clusters. We find that 137 sources have been previously identified as clusters in the literature in independent surveys, while 126 are new detections. Currently, we have collected redshift information for 158 sources (60% of the entire sample). Once the optical follow-up and the X-ray spectral analysis of the sources are complete, the SWXCS will provide a large and well-defined catalog of groups and clusters of galaxies to perform statistical studies of cluster properties and tests of cosmological models. |
| doi_str_mv | 10.1088/0067-0049/216/2/28 |
| format | Article |
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III. CLUSTER CATALOG FROM 2005-2012 ARCHIVAL DATA</title><source>Institute of Physics IOPscience extra</source><source>IOP Publishing Free Content</source><source>Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals</source><source>Alma/SFX Local Collection</source><creator>Liu, Teng ; Tozzi, Paolo ; Tundo, Elena ; Moretti, Alberto ; Rosati, Piero ; Wang, Jun-Xian ; Tagliaferri, Gianpiero ; Campana, Sergio ; Giavalisco, Mauro</creator><creatorcontrib>Liu, Teng ; Tozzi, Paolo ; Tundo, Elena ; Moretti, Alberto ; Rosati, Piero ; Wang, Jun-Xian ; Tagliaferri, Gianpiero ; Campana, Sergio ; Giavalisco, Mauro</creatorcontrib><description>We present the Swift X-ray Cluster Survey (SWXCS) catalog obtained using archival data from the X-ray telescope (XRT) on board the Swift satellite acquired from 2005 February to 2012 November, extending the first release of the SWXCS. The catalog provides positions, soft fluxes, and, when possible, optical counterparts for a flux-limited sample of X-ray group and cluster candidates. We consider the fields with Galactic latitude |b| > 20[degrees] to avoid high H I column densities. We discard all of the observations targeted at groups or clusters of galaxies, as well as particular extragalactic fields not suitable to search for faint extended sources. We finally select ~3000 useful fields covering a total solid angle of ~400 deg super(2). We identify extended source candidates in the soft-band (0.5-2 keV) images of these fields using the software EXSdetect, which is specifically calibrated for the XRT data. Extensive simulations are used to evaluate contamination and completeness as a function of the source signal, allowing us to minimize the number of spurious detections and to robustly assess the selection function. Our catalog includes 263 candidate galaxy clusters and groups down to a flux limit of 7 x 10 super(-15) erg cm super(-2) s super(-1) in the soft band, and the logN-logS is in very good agreement with previous deep X-ray surveys. The final list of sources is cross-correlated with published optical, X-ray, and Sunyaev-Zeldovich catalogs of clusters. We find that 137 sources have been previously identified as clusters in the literature in independent surveys, while 126 are new detections. Currently, we have collected redshift information for 158 sources (60% of the entire sample). Once the optical follow-up and the X-ray spectral analysis of the sources are complete, the SWXCS will provide a large and well-defined catalog of groups and clusters of galaxies to perform statistical studies of cluster properties and tests of cosmological models.</description><identifier>ISSN: 1538-4365</identifier><identifier>ISSN: 0067-0049</identifier><identifier>EISSN: 1538-4365</identifier><identifier>DOI: 10.1088/0067-0049/216/2/28</identifier><language>eng</language><publisher>United States</publisher><subject>ASTROPHYSICS, COSMOLOGY AND ASTRONOMY ; Clusters ; COMPUTER CODES ; COSMOLOGICAL MODELS ; Galactic clusters ; GALAXY CLUSTERS ; KEV RANGE ; RED SHIFT ; Samples ; SATELLITES ; SIGNALS ; SIMULATION ; Statistical methods ; Sunyaev-Zeldovich effect ; TELESCOPES ; X RADIATION ; X-RAY GALAXIES ; X-ray telescopes ; X-rays</subject><ispartof>The Astrophysical journal. 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III. CLUSTER CATALOG FROM 2005-2012 ARCHIVAL DATA</title><title>The Astrophysical journal. Supplement series</title><description>We present the Swift X-ray Cluster Survey (SWXCS) catalog obtained using archival data from the X-ray telescope (XRT) on board the Swift satellite acquired from 2005 February to 2012 November, extending the first release of the SWXCS. The catalog provides positions, soft fluxes, and, when possible, optical counterparts for a flux-limited sample of X-ray group and cluster candidates. We consider the fields with Galactic latitude |b| > 20[degrees] to avoid high H I column densities. We discard all of the observations targeted at groups or clusters of galaxies, as well as particular extragalactic fields not suitable to search for faint extended sources. We finally select ~3000 useful fields covering a total solid angle of ~400 deg super(2). We identify extended source candidates in the soft-band (0.5-2 keV) images of these fields using the software EXSdetect, which is specifically calibrated for the XRT data. Extensive simulations are used to evaluate contamination and completeness as a function of the source signal, allowing us to minimize the number of spurious detections and to robustly assess the selection function. Our catalog includes 263 candidate galaxy clusters and groups down to a flux limit of 7 x 10 super(-15) erg cm super(-2) s super(-1) in the soft band, and the logN-logS is in very good agreement with previous deep X-ray surveys. The final list of sources is cross-correlated with published optical, X-ray, and Sunyaev-Zeldovich catalogs of clusters. We find that 137 sources have been previously identified as clusters in the literature in independent surveys, while 126 are new detections. Currently, we have collected redshift information for 158 sources (60% of the entire sample). Once the optical follow-up and the X-ray spectral analysis of the sources are complete, the SWXCS will provide a large and well-defined catalog of groups and clusters of galaxies to perform statistical studies of cluster properties and tests of cosmological models.</description><subject>ASTROPHYSICS, COSMOLOGY AND ASTRONOMY</subject><subject>Clusters</subject><subject>COMPUTER CODES</subject><subject>COSMOLOGICAL MODELS</subject><subject>Galactic clusters</subject><subject>GALAXY CLUSTERS</subject><subject>KEV RANGE</subject><subject>RED SHIFT</subject><subject>Samples</subject><subject>SATELLITES</subject><subject>SIGNALS</subject><subject>SIMULATION</subject><subject>Statistical methods</subject><subject>Sunyaev-Zeldovich effect</subject><subject>TELESCOPES</subject><subject>X RADIATION</subject><subject>X-RAY GALAXIES</subject><subject>X-ray telescopes</subject><subject>X-rays</subject><issn>1538-4365</issn><issn>0067-0049</issn><issn>1538-4365</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNqNkU1Pg0AQhonRxFr9A5428eKFMvvFLkeC1JJgaoBWGw8bXJaIaYuy9OC_F1JjPHqZmbzzzFwex7nGMMMgpQfgCxeABR7Bvkc8Ik-cCeZUuoz6_PTPfO5cWPsOAILTYOK8FIsY5U_JvEDPbhZuUBGncR4tH2MUpau8iDOUr7J1vJmhJElmv2EUFmG6vEfzbPmACAB3CWCCwixaJOswRXfD_tI5q8utNVc_feqs5nERLdzhMInC1NVU8n6ouDYC14Lw10pyjSstNPiMBIJQyTjBJeMMdIUZpxUvfVFh3_g6qGVlJKV06twc_7a2b5TVTW_0m273e6N7RQhlAIEYqNsj9dG1nwdje7VrrDbbbbk37cEqLAJKJAZf_gMVVFIW8BElR1R3rbWdqdVH1-zK7kthUKMaNapRoxo1qFFEEUm_AVeTdcs</recordid><startdate>20150201</startdate><enddate>20150201</enddate><creator>Liu, Teng</creator><creator>Tozzi, Paolo</creator><creator>Tundo, Elena</creator><creator>Moretti, Alberto</creator><creator>Rosati, Piero</creator><creator>Wang, Jun-Xian</creator><creator>Tagliaferri, Gianpiero</creator><creator>Campana, Sergio</creator><creator>Giavalisco, Mauro</creator><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>KL.</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>OTOTI</scope><orcidid>https://orcid.org/0000-0002-4419-6434</orcidid><orcidid>https://orcid.org/0000-0002-7831-8751</orcidid><orcidid>https://orcid.org/0000-0003-0121-0723</orcidid><orcidid>https://orcid.org/0000-0003-3096-9966</orcidid><orcidid>https://orcid.org/0000-0002-2941-6734</orcidid></search><sort><creationdate>20150201</creationdate><title>THE SWIFT X-RAY TELESCOPE CLUSTER SURVEY. III. CLUSTER CATALOG FROM 2005-2012 ARCHIVAL DATA</title><author>Liu, Teng ; Tozzi, Paolo ; Tundo, Elena ; Moretti, Alberto ; Rosati, Piero ; Wang, Jun-Xian ; Tagliaferri, Gianpiero ; Campana, Sergio ; Giavalisco, Mauro</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c385t-c31fe71f725bd85c1dc7c0642972384521a4540cd1453d5a67d16e6c9f8de8333</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>ASTROPHYSICS, COSMOLOGY AND ASTRONOMY</topic><topic>Clusters</topic><topic>COMPUTER CODES</topic><topic>COSMOLOGICAL MODELS</topic><topic>Galactic clusters</topic><topic>GALAXY CLUSTERS</topic><topic>KEV RANGE</topic><topic>RED SHIFT</topic><topic>Samples</topic><topic>SATELLITES</topic><topic>SIGNALS</topic><topic>SIMULATION</topic><topic>Statistical methods</topic><topic>Sunyaev-Zeldovich effect</topic><topic>TELESCOPES</topic><topic>X RADIATION</topic><topic>X-RAY GALAXIES</topic><topic>X-ray telescopes</topic><topic>X-rays</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Liu, Teng</creatorcontrib><creatorcontrib>Tozzi, Paolo</creatorcontrib><creatorcontrib>Tundo, Elena</creatorcontrib><creatorcontrib>Moretti, Alberto</creatorcontrib><creatorcontrib>Rosati, Piero</creatorcontrib><creatorcontrib>Wang, Jun-Xian</creatorcontrib><creatorcontrib>Tagliaferri, Gianpiero</creatorcontrib><creatorcontrib>Campana, Sergio</creatorcontrib><creatorcontrib>Giavalisco, Mauro</creatorcontrib><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection><jtitle>The Astrophysical journal. Supplement series</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Liu, Teng</au><au>Tozzi, Paolo</au><au>Tundo, Elena</au><au>Moretti, Alberto</au><au>Rosati, Piero</au><au>Wang, Jun-Xian</au><au>Tagliaferri, Gianpiero</au><au>Campana, Sergio</au><au>Giavalisco, Mauro</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>THE SWIFT X-RAY TELESCOPE CLUSTER SURVEY. III. CLUSTER CATALOG FROM 2005-2012 ARCHIVAL DATA</atitle><jtitle>The Astrophysical journal. Supplement series</jtitle><date>2015-02-01</date><risdate>2015</risdate><volume>216</volume><issue>2</issue><spage>1</spage><epage>15</epage><pages>1-15</pages><issn>1538-4365</issn><issn>0067-0049</issn><eissn>1538-4365</eissn><abstract>We present the Swift X-ray Cluster Survey (SWXCS) catalog obtained using archival data from the X-ray telescope (XRT) on board the Swift satellite acquired from 2005 February to 2012 November, extending the first release of the SWXCS. The catalog provides positions, soft fluxes, and, when possible, optical counterparts for a flux-limited sample of X-ray group and cluster candidates. We consider the fields with Galactic latitude |b| > 20[degrees] to avoid high H I column densities. We discard all of the observations targeted at groups or clusters of galaxies, as well as particular extragalactic fields not suitable to search for faint extended sources. We finally select ~3000 useful fields covering a total solid angle of ~400 deg super(2). We identify extended source candidates in the soft-band (0.5-2 keV) images of these fields using the software EXSdetect, which is specifically calibrated for the XRT data. Extensive simulations are used to evaluate contamination and completeness as a function of the source signal, allowing us to minimize the number of spurious detections and to robustly assess the selection function. Our catalog includes 263 candidate galaxy clusters and groups down to a flux limit of 7 x 10 super(-15) erg cm super(-2) s super(-1) in the soft band, and the logN-logS is in very good agreement with previous deep X-ray surveys. The final list of sources is cross-correlated with published optical, X-ray, and Sunyaev-Zeldovich catalogs of clusters. We find that 137 sources have been previously identified as clusters in the literature in independent surveys, while 126 are new detections. Currently, we have collected redshift information for 158 sources (60% of the entire sample). Once the optical follow-up and the X-ray spectral analysis of the sources are complete, the SWXCS will provide a large and well-defined catalog of groups and clusters of galaxies to perform statistical studies of cluster properties and tests of cosmological models.</abstract><cop>United States</cop><doi>10.1088/0067-0049/216/2/28</doi><tpages>15</tpages><orcidid>https://orcid.org/0000-0002-4419-6434</orcidid><orcidid>https://orcid.org/0000-0002-7831-8751</orcidid><orcidid>https://orcid.org/0000-0003-0121-0723</orcidid><orcidid>https://orcid.org/0000-0003-3096-9966</orcidid><orcidid>https://orcid.org/0000-0002-2941-6734</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY Clusters COMPUTER CODES COSMOLOGICAL MODELS Galactic clusters GALAXY CLUSTERS KEV RANGE RED SHIFT Samples SATELLITES SIGNALS SIMULATION Statistical methods Sunyaev-Zeldovich effect TELESCOPES X RADIATION X-RAY GALAXIES X-ray telescopes X-rays |
| title | THE SWIFT X-RAY TELESCOPE CLUSTER SURVEY. III. CLUSTER CATALOG FROM 2005-2012 ARCHIVAL DATA |
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