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.

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~1 / Aghanim, N.; Arnaud, M.; Ashdown, M.; Atrio barandela, F.; Aumont, J.; Baccigalupi, Carlo; Balbi, A.; Banday, A. J.; Barreiro, R. B.; Bartlett, J. G.; Battaner, E.; Benabed, K.; Benoît, A.; Bernard, J. . P.; Bersanelli, M.; Bhatia, R.; Böhringer, H.; Bonaldi, A.; Bond, J. R.; Borgani, S.; Borrill, J.; Bouchet, F. R.; Brown, M. L.; Burigana, C.; Cabella, P.; Cantalupo, C. M.; Cappellini, B.; Carvalho, P.; Catalano, A.; Cayón, L.; Chiang, L. . Y.; Chiang, C.; Chon, G.; Christensen, P. R.; Churazov, E.; Clements, D. L.; Colafrancesco, S.; Colombi, S.; Crill, B. P.; Cuttaia, F.; Da Silva, A.; Dahle, H.; Danese, Luigi; 'Arcangelo, O. D.; Davis, R. J.; De Bernardis, P.; De Gasperis, G.; De Zotti, Gianfranco; Delabrouille, J.; Delouis, J. . M.; Démoclès, J.; Désert, F. . X.; Dickinson, C.; Diego, J. M.; Dole, H.; Donzelli, S.; Doré, O.; Douspis, M.; Dupac, X.; Efstathiou, G.; Enßlin, T. A.; Eriksen, H. K.; 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.; González nuevo, J.; González riestra, R.; Górski, K. M.; Gregorio, A.; Gruppuso, A.; Hansen, F. K.; Harrison, D.; Heinämäki, P.; Hernández monteagudo, C.; Hildebrandt, S. R.; Hivon, E.; Hobson, M.; Hurier, G.; Jaffe, A. H.; Jones, W. C.; Juvela, M.; Keihänen, E.; Keskitalo, R.; Kisner, T. S.; Kneissl, R.; Kurki suonio, H.; Lagache, G.; Lähteenmäki, A.; Lamarre, J. . M.; Lasenby, A.; Lawrence, C. R.; Le Jeune, M.; Leach, Samuel Michael; Leonardi, R.; Leroy, C.; Liddle, A.; Lilje, P. B.; López caniego, M.; Luzzi, G.; Macías pérez, J. F.; Maino, D.; Mandolesi, N.; Marleau, F.; Martínez gonzález, E.; Masi, S.; Matarrese, S.; Mazzotta, P.; Meinhold, P. R.; Melchiorri, A.; Melin, J. . B.; Mendes, L.; Mennella, A.; Miville deschênes, M. . A.; Moneti, A.; Montier, L.; Morgante, G.; Mortlock, D.; Munshi, D.; Naselsky, P.; Natoli, P.; Nevalainen, J.; Nørgaard nielsen, H. U.; Noviello, F.; Novikov, D.; Novikov, I.; O'Dwyer, I. J.; Osborne, S.; Paladini, R.; Pasian, F.; Patanchon, G.; Pearson, T. J.; Perdereau, O.; Perotto, L.; Perrotta, Francesca; Piacentini, F.; Pierpaoli, E.; Piffaretti, R.; Platania, P.; Pointecouteau, E.; Polenta, G.; Ponthieu, N.; Popa, L.; Poutanen, T.; Pratt, G. W.; Prézeau, G.; Prunet, S.; Puget, J. . L.; Rachen, J. P.; Rebolo, R.; Reinecke, M.; Renault, C.; Ricciardi, S.; Riller, T.; Ristorcelli, I.; Rocha, G.; Rubiño martín, J. A.; Saar, E.; Sandri, M.; Savini, G.; Schaefer, B. M.; Scott, D.; Smoot, G. F.; Starck, J. . L.; Sutton, D.; Sygnet, J. . F.; Tauber, J. A.; Terenzi, L.; Toffolatti, L.; Tomasi, M.; Tristram, M.; Türler, M.; Valenziano, L.; Vielva, P.; Villa, F.; Vittorio, N.; Wade, L. A.; Wandelt, B. D.; Weller, J.; White, S. D. M.; White, M.; Yvon, D.; Zacchei, A.; Zonca, A.. - In: ASTRONOMY & ASTROPHYSICS. - ISSN 0004-6361. - 536:(2011), pp. 1-7. [10.1051/0004-6361/201117430]

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~1

Baccigalupi, Carlo;Danese, Luigi;De Zotti, Gianfranco;Leach, Samuel Michael;Perrotta, Francesca;
2011-01-01

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.
2011
536
1
7
A26
Aghanim, N.; Arnaud, M.; Ashdown, M.; Atrio barandela, F.; Aumont, J.; Baccigalupi, Carlo; Balbi, A.; Banday, A. J.; Barreiro, R. B.; Bartlett, J. G.;...espandi
File in questo prodotto:
File Dimensione Formato  
aa17430-11.pdf

accesso aperto

Tipologia: Versione Editoriale (PDF)
Licenza: Non specificato
Dimensione 303.25 kB
Formato Adobe PDF
303.25 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/12636
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 45
  • ???jsp.display-item.citation.isi??? 69
social impact