THE ATACAMA COSMOLOGY TELESCOPE: DYNAMICAL MASSES AND SCALING RELATIONS FOR A SAMPLE OF MASSIVE SUNYAEV-ZEL'DOVICH EFFECT SELECTED GALAXY CLUSTERS
We present the first dynamical mass estimates and scaling relations for a sample of Sunyaev-Zel'dovich effect (SZE) selected galaxy clusters. The sample consists of 16 massive clusters detected with the Atacama Cosmology Telescope (ACT) over a 455 deg super(2) area of the southern sky. The dyna...
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| Veröffentlicht in: | The Astrophysical journal 2013-07, Vol.772 (1), p.1-16 |
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| creator | SIFON, CRISTOBAL Menanteau, Felipe HASSELFIELD, MATTHEW Marriage, Tobias A Hughes, John P Barrientos, L Felipe Gonzalez, Jorge Infante, Leopoldo Addison, Graeme E Baker, Andrew J |
| description | We present the first dynamical mass estimates and scaling relations for a sample of Sunyaev-Zel'dovich effect (SZE) selected galaxy clusters. The sample consists of 16 massive clusters detected with the Atacama Cosmology Telescope (ACT) over a 455 deg super(2) area of the southern sky. The dynamical masses M sub(200)c of the clusters have been calculated using simulation-based scaling relations between velocity dispersion and mass. These masses are compared to the ACT SZE properties of the sample, specifically, the match-filtered central SZE amplitude y sub(0), the central Compton parameter y sub(0), and the integrated Compton signal Y sub(200)c, which we use to derive SZE-mass scaling relations. All SZE estimators correlate with dynamical mass with low intrinsic scatter ([lap]20%), in agreement with numerical simulations. There are hints that disturbed systems might bias the scaling relations, but given the current sample sizes, these differences are not significant; further studies including more clusters are required to assess the impact of these clusters on the scaling relations. |
| doi_str_mv | 10.1088/0004-637X/772/1/25 |
| format | Article |
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The sample consists of 16 massive clusters detected with the Atacama Cosmology Telescope (ACT) over a 455 deg super(2) area of the southern sky. The dynamical masses M sub(200)c of the clusters have been calculated using simulation-based scaling relations between velocity dispersion and mass. These masses are compared to the ACT SZE properties of the sample, specifically, the match-filtered central SZE amplitude y sub(0), the central Compton parameter y sub(0), and the integrated Compton signal Y sub(200)c, which we use to derive SZE-mass scaling relations. All SZE estimators correlate with dynamical mass with low intrinsic scatter ([lap]20%), in agreement with numerical simulations. There are hints that disturbed systems might bias the scaling relations, but given the current sample sizes, these differences are not significant; further studies including more clusters are required to assess the impact of these clusters on the scaling relations.</description><identifier>ISSN: 0004-637X</identifier><identifier>EISSN: 1538-4357</identifier><identifier>DOI: 10.1088/0004-637X/772/1/25</identifier><language>eng</language><publisher>United States</publisher><subject>AMPLITUDES ; ASTROPHYSICS, COSMOLOGY AND ASTRONOMY ; Clusters ; Computer simulation ; COMPUTERIZED SIMULATION ; COSMOLOGY ; Dispersions ; Dynamical systems ; Galactic clusters ; GALAXY CLUSTERS ; MASS ; Mathematical models ; RED SHIFT ; RELICT RADIATION ; SCALING ; SKY ; SPECTRA ; TELESCOPES ; VELOCITY</subject><ispartof>The Astrophysical journal, 2013-07, Vol.772 (1), p.1-16</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c451t-fcfaacc7adad0e32f9eaa979a4efb1429661c2d67b034934755cf0512d5ae5813</citedby><cites>FETCH-LOGICAL-c451t-fcfaacc7adad0e32f9eaa979a4efb1429661c2d67b034934755cf0512d5ae5813</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,776,780,881,27901,27902</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/22121882$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>SIFON, CRISTOBAL</creatorcontrib><creatorcontrib>Menanteau, Felipe</creatorcontrib><creatorcontrib>HASSELFIELD, MATTHEW</creatorcontrib><creatorcontrib>Marriage, Tobias A</creatorcontrib><creatorcontrib>Hughes, John P</creatorcontrib><creatorcontrib>Barrientos, L Felipe</creatorcontrib><creatorcontrib>Gonzalez, Jorge</creatorcontrib><creatorcontrib>Infante, Leopoldo</creatorcontrib><creatorcontrib>Addison, Graeme E</creatorcontrib><creatorcontrib>Baker, Andrew J</creatorcontrib><title>THE ATACAMA COSMOLOGY TELESCOPE: DYNAMICAL MASSES AND SCALING RELATIONS FOR A SAMPLE OF MASSIVE SUNYAEV-ZEL'DOVICH EFFECT SELECTED GALAXY CLUSTERS</title><title>The Astrophysical journal</title><description>We present the first dynamical mass estimates and scaling relations for a sample of Sunyaev-Zel'dovich effect (SZE) selected galaxy clusters. The sample consists of 16 massive clusters detected with the Atacama Cosmology Telescope (ACT) over a 455 deg super(2) area of the southern sky. The dynamical masses M sub(200)c of the clusters have been calculated using simulation-based scaling relations between velocity dispersion and mass. These masses are compared to the ACT SZE properties of the sample, specifically, the match-filtered central SZE amplitude y sub(0), the central Compton parameter y sub(0), and the integrated Compton signal Y sub(200)c, which we use to derive SZE-mass scaling relations. All SZE estimators correlate with dynamical mass with low intrinsic scatter ([lap]20%), in agreement with numerical simulations. There are hints that disturbed systems might bias the scaling relations, but given the current sample sizes, these differences are not significant; further studies including more clusters are required to assess the impact of these clusters on the scaling relations.</description><subject>AMPLITUDES</subject><subject>ASTROPHYSICS, COSMOLOGY AND ASTRONOMY</subject><subject>Clusters</subject><subject>Computer simulation</subject><subject>COMPUTERIZED SIMULATION</subject><subject>COSMOLOGY</subject><subject>Dispersions</subject><subject>Dynamical systems</subject><subject>Galactic clusters</subject><subject>GALAXY CLUSTERS</subject><subject>MASS</subject><subject>Mathematical models</subject><subject>RED SHIFT</subject><subject>RELICT RADIATION</subject><subject>SCALING</subject><subject>SKY</subject><subject>SPECTRA</subject><subject>TELESCOPES</subject><subject>VELOCITY</subject><issn>0004-637X</issn><issn>1538-4357</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNqNkcuO0zAUhi0EEmXgBVhZYgGbUF_i2GFnpU4bKZdRnVZTNpbHdURRpxnizILX4IknmSLWrI5-6dM5_9EHwEeMvmIkxBIhFEcJ5XdLzskSLwl7BRaYURHFlPHXYPEPeAvehfBzjiRNF-BPu1FQtjKTlYRZo6umbNYH2KpS6ay5Vd_g6lDLqshkCSuptdJQ1iuop1zUa7hVpWyLptYwb7ZQQi2r21LBJn-Bi72CelcfpNpH31X5edXsi2wDVZ6rrIV6upG1agXXspR3B5iVO92qrX4P3nT2HPyHv_MG7HLVZptoajb3iFzM8Bh1rrPWOW6P9og8JV3qrU15amPf3ePpuyTBjhwTfo9onNKYM-Y6xDA5MuuZwPQGfLru7cN4MsGdRu9-uP5y8W40hGCChSAT9eVKPQ79rycfRvNwCs6fz_bi-6dgMMcipZzg9D9QxJBIMBETSq6oG_oQBt-Zx-H0YIffBiMzGzWzITMLM5NRgw1h9BkXpYdR</recordid><startdate>20130720</startdate><enddate>20130720</enddate><creator>SIFON, CRISTOBAL</creator><creator>Menanteau, Felipe</creator><creator>HASSELFIELD, MATTHEW</creator><creator>Marriage, Tobias A</creator><creator>Hughes, John P</creator><creator>Barrientos, L Felipe</creator><creator>Gonzalez, Jorge</creator><creator>Infante, Leopoldo</creator><creator>Addison, Graeme E</creator><creator>Baker, Andrew J</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></search><sort><creationdate>20130720</creationdate><title>THE ATACAMA COSMOLOGY TELESCOPE: DYNAMICAL MASSES AND SCALING RELATIONS FOR A SAMPLE OF MASSIVE SUNYAEV-ZEL'DOVICH EFFECT SELECTED GALAXY CLUSTERS</title><author>SIFON, CRISTOBAL ; 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| subjects | AMPLITUDES ASTROPHYSICS, COSMOLOGY AND ASTRONOMY Clusters Computer simulation COMPUTERIZED SIMULATION COSMOLOGY Dispersions Dynamical systems Galactic clusters GALAXY CLUSTERS MASS Mathematical models RED SHIFT RELICT RADIATION SCALING SKY SPECTRA TELESCOPES VELOCITY |
| title | THE ATACAMA COSMOLOGY TELESCOPE: DYNAMICAL MASSES AND SCALING RELATIONS FOR A SAMPLE OF MASSIVE SUNYAEV-ZEL'DOVICH EFFECT SELECTED GALAXY CLUSTERS |
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