Bibcode
Planck Collaboration; Ade, P. A. R.; Aghanim, N.; Arnaud, M.; Ashdown, M.; Aumont, J.; Baccigalupi, C.; Balbi, A.; Banday, A. J.; Barreiro, R. B.; Bartelmann, M.; Bartlett, J. G.; Battaner, E.; Battye, R.; Benabed, K.; Benoît, A.; Bernard, J.-P.; Bersanelli, M.; Bhatia, R.; Bock, J. J.; Bonaldi, A.; Bond, J. R.; Borrill, J.; Bouchet, F. R.; Brown, M. L.; Bucher, M.; Burigana, C.; Cabella, P.; Cantalupo, C. M.; Cardoso, J.-F.; Carvalho, P.; Catalano, A.; Cayón, L.; Challinor, A.; Chamballu, A.; Chary, R.-R.; Chiang, L.-Y.; Chiang, C.; Chon, G.; Christensen, P. R.; Churazov, E.; Clements, D. L.; Colafrancesco, S.; Colombi, S.; Couchot, F.; Coulais, A.; Crill, B. P.; Cuttaia, F.; da Silva, A.; Dahle, H.; Danese, L.; Davis, R. J.; de Bernardis, P.; de Gasperis, G.; de Rosa, A.; de Zotti, G.; Delabrouille, J.; Delouis, J.-M.; Désert, F.-X.; Dickinson, C.; Diego, J. M.; Dolag, K.; Dole, H.; Donzelli, S.; Doré, O.; Dörl, U.; Douspis, M.; Dupac, X.; Efstathiou, G.; Eisenhardt, P.; Enßlin, T. A.; Feroz, F.; Finelli, F.; Flores-Cacho, I.; Forni, O.; Fosalba, P.; Frailis, M.; Franceschi, E.; Fromenteau, S.; Galeotta, S.; Ganga, K.; Génova-Santos, R. T.; Giard, M.; Giardino, G.; Giraud-Héraud, Y.; González-Nuevo, J.; González-Riestra, R.; Górski, K. M.; Grainge, K. J. B.; Gratton, S.; Gregorio, A.; Gruppuso, A.; Harrison, D.; Heinämäki, P.; Henrot-Versillé, S.; Hernández-Monteagudo, C.; Herranz, D.; Hildebrandt, S. R.; Hivon, E.; Hobson, M. et al.
Bibliographical reference
Astronomy and Astrophysics, Volume 536, id.A8
Advertised on:
12
2011
Journal
Citations
378
Refereed citations
350
Description
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&sun;.
Corresponding author: M. Douspis, e-mail:
marian.douspis [at] ias.u-psud.frAppendix (marian[dot]douspis[at]ias[dot]u-psud[dot]frAppendix) is available in electronic form at
http://www.aanda.org
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Rafael
Rebolo López