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| Título: | Planck early results. VIII. The all-sky early Sunyaev-Zeldovich cluster sample |
Autor: | Barreiro, R. Belén CSIC ORCID ; Diego, José María CSIC ORCID ; Herranz, D. CSIC ORCID ; López-Caniego, M. CSIC ORCID; Vielva, Patricio CSIC ORCID ; Martínez-González, Enrique CSIC ORCID | Palabras clave: | Cosmology: observations Galaxies: clusters: general Catalogues |
Fecha de publicación: | dic-2011 | Editor: | EDP Sciences | Citación: | Astronomy and Astrophysics 536: A8 (2011) | Resumen: | We present the first all-sky sample of galaxy clusters detected blindly by the Planck satellite through the Sunyaev-Zeldovich (SZ) effect from its six highest frequencies. This early SZ (ESZ) sample is comprised of 189 candidates, which have a high signal-to-noise ratio ranging from 6 to 29. Its high reliability (purity above 95%) is further ensured by an extensive validation process based on Planck internal quality assessments and by external cross-identification and follow-up observations. Planck provides the first measured SZ signal for about 80% of the 169 previously-known ESZ clusters. Planck furthermore releases 30 new cluster candidates, amongst which 20 meet the ESZ signal-to-noise selection criterion. At the submission date, twelve of the 20 ESZ candidates were confirmed as new clusters, with eleven confirmed using XMM-Newton snapshot observations, most of them with disturbed morphologies and low luminosities. The ESZ clusters are mostly at moderate redshifts (86% with z below 0.3) and span more than a decade in mass, up to the rarest and most massive clusters with masses above 1 × 1015 M⊙. | Descripción: | 28 páginas, 22 figuras, 3 tablas.-- Planck Collaboration: et al. | Versión del editor: | http://dx.doi.org/10.1051/0004-6361/201116459 | URI: | http://hdl.handle.net/10261/46423 | DOI: | 10.1051/0004-6361/201116459 | ISSN: | 0004-6361 | E-ISSN: | 1432-0746 |
| Aparece en las colecciones: | (IFCA) Artículos (ICE) Artículos |
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| aa16459-11[1].pdf | 2,82 MB | Adobe PDF |  Visualizar/Abrir |
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