Planck early results. VIII. The all-sky early Sunyaev-Zeldovich cluster sample

Kneissl, R.; Dahle, H.; Miville-Deschênes, M. -A.; Bernard, J. -P.; Planck Collaboration; Ade, P. A. R.; Aghanim, N.; Arnaud, M.; Ashdown, M.; Aumont, J.; Baccigalupi, C.; Banday, A. J.; Barreiro, R. B.; Bartlett, J. G.; Battaner, E.; Benabed, K.; Benoît, A.; Bersanelli, M.; Bock, J. J.; Bonaldi, A.; Bond, J. R.; Borrill, J.; Bouchet, F. R.; Bucher, M.; Burigana, C.; Cardoso, J. -F.; Catalano, A.; Challinor, A.; Chamballu, A.; Chary, R. -R.; Christensen, P. R.; Clements, D. L.; Colombi, S.; Couchot, F.; Coulais, A.; Crill, B. P.; Cuttaia, F.; Danese, L.; Davis, R. J.; de Bernardis, P.; de Rosa, A.; de Zotti, G.; Delabrouille, J.; Désert, F. -X.; Dickinson, C.; Diego, J. M.; Dole, H.; Donzelli, S.; Doré, O.; Douspis, M.; Dupac, X.; Efstathiou, G.; Enßlin, T. A.; Finelli, F.; Forni, O.; Frailis, M.; Franceschi, E.; Galeotta, S.; Ganga, K.; Giard, M.; Giraud-Héraud, Y.; González-Nuevo, J.; Górski, K. M.; Gratton, S.; Gregorio, A.; Gruppuso, A.; Henrot-Versillé, S.; Hernández-Monteagudo, C.; Herranz, D.; Hildebrandt, S. R.; Hivon, E.; Hobson, M.; Holmes, W. A.; Hovest, W.; Huffenberger, K. M.; Hurier, G.; Jaffe, A. H.; Jones, W. C.; Juvela, M.; Keihänen, E.; Keskitalo, R.; Kisner, T. S.; Kurki-Suonio, H.; Lagache, G.; Lamarre, J. -M.; Lasenby, A.; Lawrence, C. R.; Le Jeune, M.; Leonardi, R.; Lilje, P. B.; Linden-Vørnle, M.; López-Caniego, M.; Lubin, P. M.; Macías-Pérez, J. F.; Maino, D.; Mandolesi, N.; Maris, M.; Martínez-González, E.; Masi, S.; Matarrese, S.; Meinhold, P. R.; Melchiorri, A.; Mendes, L.; Mennella, A.; Mitra, S.; Moneti, A.; Montier, L.; Morgante, G.; Mortlock, D.; Munshi, D.; Naselsky, P.; Nati, F.; Natoli, P.; Netterfield, C. B.; Nørgaard-Nielsen, H. U.; Noviello, F.; Novikov, D.; Novikov, I.; Pajot, F.; Pasian, F.; Patanchon, G.; Pearson, T. J.; Perdereau, O.; Perotto, L.; Perrotta, F.; Piacentini, F.; Piat, M.; Pierpaoli, E.; Plaszczynski, S.; Pointecouteau, E.; Polenta, G.; Pratt, G. W.; Prézeau, G.; Prunet, S.; Puget, J. -L.; Rachen, J. P.; Reach, W. T.; Rebolo, R.; Reinecke, M.; Renault, C.; Ristorcelli, I.; Rocha, G.; Rosset, C.; Rubiño-Martín, J. A.; Rusholme, B.; Sandri, M.; Santos, D.; Savini, G.; Scott, D.; Seiffert, M. D.; Stolyarov, V.; Stompor, R.; Sudiwala, R.; Sunyaev, R.; Sutton, D.; Sygnet, J. -F.; Tauber, J. A.; Terenzi, L.; Toffolatti, L.; Tomasi, M.; Tristram, M.; Tuovinen, J.; Valenziano, L.; Vielva, P.; Villa, F.; Wade, L. A.; Wandelt, B. D.; Yvon, D.; Zacchei, A.; Zonca, A.; Churazov, E.; White, S. D. M.; Fosalba, P.; Starck, J. -L.; Colafrancesco, S.; Mazzotta, P.; Li, C.; Maffei, B.; Knox, L.; Laureijs, R. J.; Weller, J.; Mei, S.; Ponthieu, N.; Giardino, G.; Bartelmann, M.; González-Riestra, R.; Chiang, L. -Y.; Delouis, J. -M.; Harrison, D.; Matthai, F.; Osborne, S.; Poutanen, T.; Ricciardi, S.; Riller, T.; Vittorio, N.; Eisenhardt, P.; Chon, G.; Balbi, A.; Bhatia, R.; Cabella, P.; Cantalupo, C. M.; Cayón, L.; de Gasperis, G.; Dörl, U.; Hoyland, R. J.; Leach, S.; MacTavish, C. J.; Mann, R.; Murphy, A.; Smoot, G. F.; Stivoli, F.; Torre, J. -P.; Génova-Santos, R. T.; Melin, J. -B.; Feroz, F.; Shellard, P.; Brown, M. L.; Carvalho, P.; Dolag, K.; Flores-Cacho, I.; Liddle, A.; Marleau, F.; Piffaretti, R.; White, M.; Hurley-Walker, N.; Vibert, L.; Battye, R.; Heinämäki, P.; Schaefer, B. M.; Chiang, C.; Fromenteau, S.; Grainge, K. J. B.; da Silva, A.; Saar, E.; Stanford, A.; Olamaie, M.; Saunders, R. D. E.; Taburet, N.

Abstract

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.

Corresponding author: M. Douspis, e-mail: marian.douspis@ias.u-psud.frAppendix is available in electronic form at http://www.aanda.org

2011 Astronomy and Astrophysics
XMM-Newton Planck 388