Peer-Reviewed Journal Details
Mandatory Fields
Aghanim, N;Arnaud, M;Ashdown, M;Aumont, J;Baccigalupi, C;Balbi, A;Banday, AJ;Barreiro, RB;Bartelmann, M;Bartlett, JG;Battaner, E;Benabed, K;Benoit, A;Bernard, JP;Bersanelli, M;Bhatia, R;Bock, JJ;Bonaldi, A;Bond, JR;Borrill, J;Bouchet, FR;Brown, ML;Bucher, M;Burigana, C;Cabella, P;Cantalupo, CM;Cardoso, JF;Carvalho, P;Catalano, A;Cayon, L;Challinor, A;Chamballu, A;Chiang, LY;Chon, G;Christensen, PR;Churazov, E;Clements, DL;Colafrancesco, S;Colombi, S;Couchot, F;Coulais, A;Crill, BP;Cuttaia, F;Da Silva, A;Dahle, H;Danese, L;de Bernardis, P;de Gasperis, G;de Rosa, A;de Zotti, G;Delabrouille, J;Delouis, JM;Desert, FX;Diego, JM;Dolag, K;Donzelli, S;Dore, O;Dorl, U;Douspis, M;Dupac, X;Efstathiou, G;Ensslin, TA;Finelli, F;Flores-Cacho, I;Forni, O;Frailis, M;Franceschi, E;Fromenteau, S;Galeotta, S;Ganga, K;Genova-Santos, RT;Giard, M;Giardino, G;Giraud-Heraud, Y;Gonzalez-Nuevo, J;Gonzalez-Riestra, R;Gorski, KM;Gratton, S;Gregorio, A;Gruppuso, A;Harrison, D;Heinamaki, P;Henrot-Versille, S;Hernandez-Monteagudo, C;Herranz, D;Hildebrandt, SR;Hivon, E;Hobson, M;Holmes, WA;Hovest, W;Hoyland, RJ;Huffenberger, KM;Hurier, G;Jaffe, AH;Juvela, M;Keihanen, E;Keskitalo, R;Kisner, TS;Kneissl, R;Knox, L;Kurki-Suonio, H;Lagache, G;Lamarre, JM;Lasenby, A;Laureijs, RJ;Lawrence, CR;Le Jeune, M;Leach, S;Leonardi, R;Liddle, A;Linden-Vornle, M;Lopez-Caniego, M;Lubin, PM;Macias-Perez, JF;Maffei, B;Maino, D;Mandolesi, N;Mann, R;Maris, M;Marleau, F;Martinez-Gonzalez, E;Masi, S;Matarrese, S;Matthai, F;Mazzotta, P;Melchiorri, A;Melin, JB;Mendes, L;Mennella, A;Mitra, S;Miville-Deschenes, MA;Moneti, A;Montier, L;Morgante, G;Mortlock, D;Munshi, D;Murphy, A;Naselsky, P;Natoli, P;Netterfield, CB;Norgaard-Nielsen, HU;Noviello, F;Novikov, D;Novikov, I;Osborne, S;Pajot, F;Pasian, F;Patanchon, G;Perdereau, O;Perotto, L;Perrotta, F;Piacentini, F;Piat, M;Pierpaoli, E;Piffaretti, R;Plaszczynski, S;Pointecouteau, E;Polenta, G;Ponthieu, N;Poutanen, T;Pratt, GW;Prezeau, G;Prunet, S;Puget, JL;Rebolo, R;Reinecke, M;Renault, C;Ricciardi, S;Riller, T;Ristorcelli, I;Rocha, G;Rosset, C;Rubino-Martin, JA;Rusholme, B;Saar, E;Sandri, M;Santos, D;Schaefer, BM;Scott, D;Seiffert, MD;Smoot, GF;Starck, JL;Stivoli, F;Stolyarov, V;Sunyaev, R;Sygnet, JF;Tauber, JA;Terenzi, L;Toffolatti, L;Tomasi, M;Torre, JP;Tristram, M;Tuovinen, J;Valenziano, L;Vibert, L;Vielva, P;Villa, F;Vittorio, N;Wandelt, BD;White, SDM;Yvon, D;Zacchei, A;Zonca, A
2011
December
Astronomy and Astrophysics
Planck early results. IX. XMM-Newton follow-up for validation of Planck cluster candidates
Published
90 ()
Optional Fields
PRE-LAUNCH STATUS X-RAY-PROPERTIES STRUCTURE SURVEY REXCESS MASSIVE GALAXY CLUSTERS PHOTON IMAGING CAMERA REPRESENTATIVE SAMPLE SCALING RELATIONS BACKGROUND MAPS CATALOG PROFILES
536
We present the XMM-Newton follow-up for confirmation of Planck cluster candidates. Twenty-five candidates have been observed to date using snapshot (similar to 10 ks) exposures, ten as part of a pilot programme to sample a low range of signal-to-noise ratios (4 < S/N < 6), and a further 15 in a programme to observe a sample of S/N > 5 candidates. The sensitivity and spatial resolution of XMM-Newton allows unambiguous discrimination between clusters and false candidates. The 4 false candidates have S/N <= 4.1. A total of 21 candidates are confirmed as extended X-ray sources. Seventeen are single clusters, the majority of which are found to have highly irregular and disturbed morphologies (about similar to 70%). The remaining four sources are multiple systems, including the unexpected discovery of a supercluster at z = 0.45. For 20 sources we are able to derive a redshift estimate from the X-ray Fe K line (albeit of variable quality). The new clusters span the redshift range 0.09 less than or similar to z less than or similar to 0.54, with a median redshift of z similar to 0.37. A first determination is made of their X-ray properties including the characteristic size, which is used to improve the estimate of the SZ Compton parameter, Y-500. The follow-up validation programme has helped to optimise the Planck candidate selection process. It has also provided a preview of the X-ray properties of these newly-discovered clusters, allowing comparison with their SZ properties, and to the X-ray and SZ properties of known clusters observed in the Planck survey. Our results suggest that Planck may have started to reveal a non-negligible population of massive dynamically perturbed objects that is under-represented in X-ray surveys. However, despite their particular properties, these new clusters appear to follow the Y-500-Y-X relation established for X-ray selected objects, where Y-X is the product of the gas mass and temperature.
LES ULIS CEDEX A
0004-6361
10.1051/0004-6361/201116460
Grant Details