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Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/46427
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dc.contributor.authorBarreiro, R. Belén-
dc.contributor.authorDiego, José María-
dc.contributor.authorHerranz, D.-
dc.contributor.authorLópez-Caniego, M.-
dc.contributor.authorMartínez-González, Enrique-
dc.contributor.authorVielva, Patricio-
dc.date.accessioned2012-03-01T09:40:20Z-
dc.date.available2012-03-01T09:40:20Z-
dc.date.issued2011-12-
dc.identifier.citationAstronomy and Astrophysics 536: A12 (2011)es_ES
dc.identifier.issn0004-6361-
dc.identifier.urihttp://hdl.handle.net/10261/46427-
dc.description10 páginas, 6 figuras, 2 tablas.-- Planck Collaboration: et al.es_ES
dc.description.abstractWe present the Sunyaev-Zeldovich (SZ) signal-to-richness scaling relation (Y500 − N200) for the MaxBCG cluster catalogue. Employing a multi-frequency matched filter on the Planck sky maps, we measure the SZ signal for each cluster by adapting the filter according to weak-lensing calibrated mass-richness relations (N200 − M500). We bin our individual measurements and detect the SZ signal down to the lowest richness systems (N200 = 10) with high significance, achieving a detection of the SZ signal in systems with mass as low as M500 ≈ 5 × 1013 M⊙. The observed Y500 − N200 relation is well modeled by a power law over the full richness range. It has a lower normalisation at given N200 than predicted based on X-ray models and published mass-richness relations. An X-ray subsample, however, does conform to the predicted scaling, and model predictions do reproduce the relation between our measured bin-average SZ signal and measured bin-average X-ray luminosities. At fixed richness, we find an intrinsic dispersion in the Y500 − N200 relation of 60% rising to of order 100% at low richness. Thanks to its all-sky coverage, Planck provides observations for more than 13000 MaxBCG clusters and an unprecedented SZ/optical data set, extending the list of known cluster scaling laws to include SZ-optical properties. The data set offers essential clues for models of galaxy formation. Moreover, the lower normalisation of the SZ-mass relation implied by the observed SZ-richness scaling has important consequences for cluster physics and cosmological studies with SZ clusters.es_ES
dc.language.isoenges_ES
dc.publisherEDP Scienceses_ES
dc.rightsopenAccesses_ES
dc.subjectGalaxies: clusters: intracluster mediumes_ES
dc.subjectCosmic background radiationes_ES
dc.subjectLarge-scale structure of the universees_ES
dc.subjectCosmology: observationses_ES
dc.subjectGalaxies: clusters: generales_ES
dc.titlePlanck early results. XII. Cluster Sunyaev-Zeldovich optical scaling relationses_ES
dc.typeartículoes_ES
dc.identifier.doi10.1051/0004-6361/201116489-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttp://dx.doi.org/10.1051/0004-6361/201116489es_ES
dc.identifier.e-issn1432-0746-
dc.type.coarhttp://purl.org/coar/resource_type/c_6501es_ES
item.cerifentitytypePublications-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.grantfulltextopen-
item.openairetypeartículo-
item.fulltextWith Fulltext-
item.languageiso639-1en-
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