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Open Access item Planck early results. XI. Calibration of the local galaxy cluster Sunyaev-Zeldovich scaling relations

Authors:Barreiro, R. Belén
Diego, J. M.
Herranz, D.
López-Caniego, M.
Martínez-González, Enrique
Vielva, P.
Keywords:Galaxies: clusters: interacluster medium, X-rays: galaxies: clusters, Cosmology: observations
Issue Date:Dec-2011
Publisher:EDP Sciences
Citation:Astronomy and Astrophysics 536: A11 (2011)
Abstract:We present precise Sunyaev-Zeldovich (SZ) effect measurements in the direction of 62 nearby galaxy clusters (z < 0.5) detected at high signal-to-noise in the first Planck all-sky data set. The sample spans approximately a decade in total mass, 2 × 1014 M⊙ < M500 < 2 × 1015 M⊙, where M500 is the mass corresponding to a total density contrast of 500. Combining these high quality Planck measurements with deep XMM-Newton X-ray data, we investigate the relations between DA2 Y500, the integrated Compton parameter due to the SZ effect, and the X-ray-derived gas mass Mg,500, temperature TX, luminosity LX,500, SZ signal analogue YX,500 = Mg,500 × TX, and total mass M500. After correction for the effect of selection bias on the scaling relations, we find results that are in excellent agreement with both X-ray predictions and recently-published ground-based data derived from smaller samples. The present data yield an exceptionally robust, high-quality local reference, and illustrate Planck’s unique capabilities for all-sky statistical studies of galaxy clusters.
Description:14 páginas, 6 figuras, 2 tablas.-- Planck Collaboration: et al.
Publisher version (URL):http://dx.doi.org/10.1051/0004-6361/201116458
URI:http://hdl.handle.net/10261/46426
ISSN:0004-6361
E-ISSNmetadata.dc.identifier.doi = DOI:1432-0746
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