| Title | Planck early results. XXVI. Detection with Planck and confirmation by XMM-Newton of PLCK G266.6-27.3, an exceptionally X-ray luminous and massive galaxy cluster at z similar to 1 |
| Publication Type | Journal Article |
| Year of Publication | 2011 |
| Authors | ,, Aghanim, N, Arnaud, M, Ashdown, M, Atrio-Barandela, F, Aumont, J, Baccigalupi, C, Balbi, A, Banday, AJ, Barreiro, RB, Bartlett, JG, Battaner, E, Benabed, K, Benoit, A, Bernard, JP, Bersanelli, M, Bhatia, R, Bohringer, H, Bonaldi, A, Bond, JR, Borgani, S, Borrill, J, Bouchet, FR, Brown, ML, Burigana, C, Cabella, P, Cantalupo, CM, Cappellini, B, Carvalho, P, Catalano, A, Cayon, L, Chiang, LY, Chiang, C, Chon, G, Christensen, PR, Churazov, E, Clements, DL, Colafrancesco, S, Colombi, S, Crill, BP, Cuttaia, F, Da Silva, A, Dahle, H, Danese, L, D'Arcangelo, O, Davis, RJ, de Bernardis, P, de Gasperis, G, de Zotti, G, Delabrouille, J, Delouis, JM, Démoclès, J, Désert, FX, Dickinson, C, Diego, JM, Dole, H, Donzelli, S, Dore, O, Douspis, M, Dupac, X, Efstathiou, G, Ensslin, TA, Eriksen, HK, Finelli, F, Flores-Cacho, I, Forni, O, Fosalba, P, Frailis, M, Franceschi, E, Fromenteau, S, Galeotta, S, Ganga, K, Genova-Santos, RT, Giard, M, Gonzalez-Nuevo, J, Gonzalez-Riestra, R, Gorski, KM, Gregorio, A, Gruppuso, A, Hansen, FK, Harrison, D, Heinämäki, P, Hernández-Monteagudo, C, Hildebrandt, SR, Hivon, E, Hobson, M, Hurier, G, Jaffe, AH, Jones, WC, Juvela, M, Keihanen, E, Keskitalo, R, Kisner, TS, Kneissl, R, Kurki-Suonio, H, Lagache, G, Lahteenmaki, A, Lamarre, JM, Lasenby, A, Lawrence, CR, Le Jeune, M, Leach, S, Leonardi, R, Leroy, C, Liddle, A, Lilje, PB, Lopez-Caniego, M, Luzzi, G, Macias-Perez, JF, Maino, D, Mandolesi, N, Marleau, F, Martinez-Gonzalez, E, Masi, S, Matarrese, S, Mazzotta, P, Meinhold, PR, Melchiorri, A, Melin, JB, Mendes, L, Mennella, A, Miville-Deschenes, MA, Moneti, A, Montier, L, Morgante, G, Mortlock, D, Munshi, D, Naselsky, P, Natoli, P, Nevalainen, J, Norgaard-Nielsen, HU, Noviello, F, Novikov, D, Novikov, I, O'Dwyer, IJ, Osborne, S, Paladini, R, Pasian, F, Patanchon, G, Pearson, TJ, Perdereau, O, Perotto, L, Perrotta, F, Piacentini, F, Pierpaoli, E, Piffaretti, R, Platania, P, Pointecouteau, E, Polenta, G, Ponthieu, N, Popa, L, Poutanen, T, Pratt, GW, Prezeau, G, Prunet, S, Puget, JL, Rachen, JP, Rebolo, R, Reinecke, M, Renault, C, Ricciardi, S, Riller, T, Ristorcelli, I, Rocha, G, Rubino-Martin, JA, Saar, E, Sandri, M, Savini, G, Schaefer, BM, Scott, D, Smoot, GF, Starck, JL, Sutton, D, Sygnet, JF, Tauber, JA, Terenzi, L, Toffolatti, L, Tomasi, M, Tristram, M, Turler, M, Valenziano, L, Vielva, P, Villa, F, Vittorio, N, Wade, LA, Wandelt, BD, Weller, J, White, SDM, White, M, Yvon, D, Zacchei, A, Zonca, A |
| Journal | Astronomy & Astrophysics |
| Volume | 536 |
| Date Published | Dec |
| ISBN Number | 0004-6361 |
| Accession Number | WOS:000298485100027 |
| Abstract | We present first results on PLCK G266.6-27.3, a galaxy cluster candidate detected at a signal-to-noise ratio of 5 in the Planck All Sky survey. An XMM-Newton validation observation has allowed us to confirm that the candidate is a bona fide galaxy cluster. With these X-ray data we measure an accurate redshift, z = 0.94 +/- 0.02, and estimate the cluster mass to be M-500 = (7.8 +/- 0.8) x 10(14) M-circle dot. PLCK G266.6-27.3 is an exceptional system: its luminosity of L-X[0.5-2.0 keV] = (1.4 +/- 0.05) x 10(45) erg s(-1) equals that of the two most luminous known clusters in the z > 0.5 universe, and it is one of the most massive clusters at z similar to 1. Moreover, unlike the majority of high-redshift clusters, PLCK G266.6-27.3 appears to be highly relaxed. This observation confirms Planck's capability of detecting high-redshift, high-mass clusters, and opens the way to the systematic study of population evolution in the exponential tail of the mass function.
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