Authors
Peter AR Ade, Nabila Aghanim, M Arnaud, Mark Ashdown, J Aumont, Carlo Baccigalupi, A Balbi, AJ Banday, RB Barreiro, M Bartelmann, JG Bartlett, E Battaner, R Battye, K Benabed, A Benoît, J-P Bernard, M Bersanelli, R Bhatia, JJ Bock, A Bonaldi, JR Bond, J Borrill, FR Bouchet, ML Brown, M Bucher, C Burigana, P Cabella, CM Cantalupo, J-F Cardoso, P Carvalho, A Catalano, L Cayon, A Challinor, A Chamballu, R-R Chary, L-Y Chiang, C Chiang, G Chon, PR Christensen, E Churazov, DL Clements, S Colafrancesco, S Colombi, F Couchot, A Coulais, BP Crill, F Cuttaia, A Da Silva, H Dahle, Luigi Danese, RJ Davis, P De Bernardis, G De Gasperis, A De Rosa, Gianfranco De Zotti, J Delabrouille, J-M Delouis, F-X Désert, C Dickinson, JM Diego, K Dolag, H Dole, S Donzelli, O Doré, U Dörl, M Douspis, X Dupac, G Efstathiou, P Eisenhardt, TA Enßlin, F Feroz, F Finelli, I Flores-Cacho, O Forni, P Fosalba, M Frailis, E Franceschi, S Fromenteau, S Galeotta, K Ganga, RT Génova-Santos, M Giard, G Giardino, Y Giraud-Héraud, J Gonzalez-Nuevo, R Gonzalez-Riestra, KM Gorski, KJB Grainge, Serge Gratton, Anna Gregorio, A Gruppuso, D Harrison, P Heinämäki, S Henrot-Versillé, C Hernandez-Monteagudo, D Herranz, SR Hildebrandt, E Hivon, M Hobson, WA Holmes, W Hovest, RJ Hoyland, KM Huffenberger, G Hurier, N Hurley-Walker, AH Jaffe, William C Jones, M Juvela, E Keihänen, R Keskitalo, TS Kisner, R Kneissl, L Knox, H Kurki-Suonio, Guilaine Lagache, J-M Lamarre, A Lasenby, RJ Laureijs, CR Lawrence, M Le Jeune, S Leach, R Leonardi, C Li, A Liddle, PB Lilje, M Linden-Vørnle, M Lopez-Caniego, PM Lubin, JF Macias-Perez, CJ Mactavish, B Maffei, D Maino, N Mandolesi, R Mann, M Maris, F Marleau, E Martinez-Gonzalez, S Masi, Sabino Matarrese, F Matthai, P Mazzotta, S Mei, PR Meinhold, A Melchiorri, J-B Melin, L Mendes, A Mennella, Subhabrata Mitra, M-A Miville-Deschênes, A Moneti
Publication date
2011/12/1
Journal
Astronomy & Astrophysics
Volume
536
Pages
A8
Publisher
EDP sciences
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 …
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