Skip to Main content Skip to Navigation
Journal articles

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

N. Aghanim M. Arnaud M. Ashdown F. Atrio-Barandela J. Aumont C. Baccigalupi A. Balbi A. J. Banday R. B. Barreiro J.G. Bartlett 1 E. Battaner K. Benabed A. Benoit 2 J. -P. Bernard M. Bersanelli R. Bhatia H. Böhringer A. Bonaldi J. R. Bond S. Borgani J. Borrill F. R. Bouchet M. L. Brown C. Burigana P. Cabella C. M. Cantalupo B. Cappellini P. Carvalho A. Catalano 3 L. Cayón L. -Y Chiang C. Chiang G. Chon P. R. Christensen E. Churazov D. L. Clements S. Colafrancesco S. Colombi B. P. Crill F. Cuttaia A. da Silva H. Dahle L. Danese O. d'Arcangelo R. J. Davis P. de Bernardis G. de Gasperis G. de Zotti J. Delabrouille 4 J. -M. Delouis J. Démoclès F. -X. Désert C. Dickinson J. M. Diego H. Dole S. Donzelli O. Doré M. Douspis X. Dupac G. Efstathiou T. A. Enßlin H. K. Eriksen F. Finelli I. Flores-Cacho O. Forni P. Fosalba M. Frailis E. Franceschi S. Fromenteau 3 S. Galeotta K. Ganga 3 R. T. Génova-Santos M. Giard J. González-Nuevo R. González-Riestra K. M. Górski A. Gregorio A. Gruppuso F. K. Hansen D. Harrison P. Heinämäki C. Hernández-Monteagudo S.R. Hildebrandt 5 E. Hivon M. Hobson G. Hurier 5 A. H. Jaffe W. C. Jones M. Juvela E. Keihänen R. Keskitalo T. S. Kisner R. Kneissl H. Kurki-Suonio Guilaine Lagache A. Lähteenmäki J. -M. Lamarre A. Lasenby C. R. Lawrence M. Le Jeune 3 S. Leach R. Leonardi C. Leroy A. Liddle P. B. Lilje M. López-Caniego G. Luzzi 6 J.F. Macías-Pérez 5 D. Maino N. Mandolesi F. Marleau E. Martínez-González S. Masi S. Matarrese P. Mazzotta P. R. Meinhold A. Melchiorri J. -B. Melin L. Mendes A. Mennella M.-A. Miville-Deschênes A. Moneti L. Montier G. Morgante D. Mortlock D. Munshi P. Naselsky P. Natoli J. Nevalainen H. U. Nørgaard-Nielsen F. Noviello D. Novikov I. Novikov I. J. O'Dwyer S. Osborne R. Paladini F. Pasian G. Patanchon 3 T. J. Pearson O. Perdereau 6 L. Perotto 5 F. Perrotta F. Piacentini E. Pierpaoli R. Piffaretti P. Platania E. Pointecouteau G. Polenta N. Ponthieu L. Popa T. Poutanen G. W. Pratt G. Prézeau S. Prunet J. -L. Puget J. P. Rachen R. Rebolo M. Reinecke C. Renault 5 S. Ricciardi T. Riller I. Ristorcelli G. Rocha J. A. Rubiño-Martín E. Saar M. Sandri G. Savini B. M. Schaefer D. Scott G.F. Smoot 3 Jean-Luc Starck D. Sutton J. -F. Sygnet J. A. Tauber L. Terenzi L. Toffolatti M. Tomasi M. Tristram 6 M. Türler L. Valenziano P. Vielva F. Villa N. Vittorio L. A. Wade B. D. Wandelt J. Weller S. D. M. White M. White D. Yvon A. Zacchei A. Zonca
1 APC - Cosmologie
APC (UMR_7164) - AstroParticule et Cosmologie
4 APC-Gravitation - APC - Gravitation
APC (UMR_7164) - AstroParticule et Cosmologie, AEI - Max-Planck-Institut für Gravitationsphysik ( Albert-Einstein-Institut )
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)e+14 solar masses. PLCK G266.6-27.3 is an exceptional system: its luminosity of L_X(0.5-2.0 keV)=(1.4 +/- 0.05)e+45 erg/s, 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~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.
Complete list of metadatas

http://hal.in2p3.fr/in2p3-00646208
Contributor : Sabine Starita <>
Submitted on : Tuesday, November 29, 2011 - 2:14:29 PM
Last modification on : Friday, November 27, 2020 - 6:52:02 PM

Links full text

Identifiers

Citation

N. Aghanim, M. Arnaud, M. Ashdown, F. Atrio-Barandela, J. Aumont, et al.. 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. Astronomy and Astrophysics - A&A, EDP Sciences, 2011, 536, pp.A26. ⟨10.1051/0004-6361/201117430⟩. ⟨in2p3-00646208⟩

Share

Metrics

Record views

577