Issue |
A&A
Volume 536, December 2011
Planck early results
|
|
---|---|---|
Article Number | A26 | |
Number of page(s) | 7 | |
Section | Cosmology (including clusters of galaxies) | |
DOI | https://doi.org/10.1051/0004-6361/201117430 | |
Published online | 01 December 2011 |
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⋆
1
Aalto University Metsähovi Radio Observatory,
Metsähovintie 114, 02540
Kylmälä,
Finland
2
Agenzia Spaziale Italiana Science Data Center,
c/o ESRIN, via Galileo Galilei,
Frascati,
Italy
3
Astroparticule et Cosmologie, CNRS (UMR7164), Université Denis
Diderot Paris 7, Bâtiment
Condorcet, 10 rue A. Domon et Léonie Duquet, Paris, France
4
Astrophysics Group, Cavendish Laboratory, University of
Cambridge, J J Thomson
Avenue, Cambridge
CB3 0HE,
UK
5
Atacama Large Millimeter/submillimeter Array, ALMA Santiago
Central Offices, Alonso de Cordova
3107, Vitacura, Casilla
763 0355, Santiago, Chile
6
CITA, University of Toronto, 60 St. George St., Toronto, ON
M5S 3H8,
Canada
7
CNRS, IRAP, 9
Av. colonel Roche, BP
44346, 31028
Toulouse Cedex 4,
France
8
California Institute of Technology, Pasadena, California, USA
9 Centre of Mathematics for
Applications, University of Oslo, Blindern, Oslo,
Norway
10
Centro de Astrofísica, Universidade do Porto,
Rua das Estrelas, 4150-762
Porto,
Portugal
11
Centro de Estudios de Física del Cosmos de Aragón
(CEFCA), Plaza San Juan, 1, planta
2, 44001
Teruel,
Spain
12
DSM/Irfu/SPP, CEA-Saclay, 91191
Gif-sur-Yvette Cedex,
France
13
DTU Space, National Space Institute, Juliane Mariesvej 30, Copenhagen, Denmark
14
Departamento de Física Fundamental, Facultad de Ciencias,
Universidad de Salamanca, 37008
Salamanca,
Spain
15
Departamento de Física, Universidad de Oviedo,
Avda. Calvo Sotelo s/n,
Oviedo,
Spain
16
Department of Astronomy and Astrophysics, University of
Toronto, 50 Saint George Street,
Toronto, Ontario,
Canada
17
Department of Physics & Astronomy, University of British
Columbia, 6224
Agricultural Road, Vancouver,
British Columbia,
Canada
18
Department of Physics and Astronomy, University of Southern
California, Los
Angeles, California, USA
19
Department of Physics and Astronomy, University of
Sussex, Brighton
BN1 9QH,
UK
20
Department of Physics, Gustaf Hällströmin katu 2a, University of
Helsinki, Helsinki,
Finland
21
Department of Physics, Princeton University,
Princeton, New Jersey, USA
22
Department of Physics, Purdue University,
525 Northwestern Avenue,
West Lafayette, Indiana, USA
23
Department of Physics, University of California,
Berkeley, California, USA
24
Department of Physics, University of California,
Santa Barbara, California, USA
25
Department of Physics, University of Illinois at
Urbana-Champaign, 1110
West Green Street, Urbana, Illinois, USA
26
Dipartimento di Fisica G. Galilei, Università degli Studi di
Padova, via Marzolo
8, 35131
Padova,
Italy
27
Dipartimento di Fisica, Università La Sapienza,
P.le A. Moro 2, Roma, Italy
28
Dipartimento di Fisica, Università degli Studi di
Milano, via Celoria
16, Milano,
Italy
29
Dipartimento di Fisica, Università degli Studi di
Trieste, via A. Valerio
2, Trieste,
Italy
30
Dipartimento di Fisica, Università di Ferrara,
via Saragat 1, 44122
Ferrara,
Italy
31
Dipartimento di Fisica, Università di Roma Tor
Vergata, via della Ricerca
Scientifica 1, Roma, Italy
32
Discovery Center, Niels Bohr Institute,
Blegdamsvej 17, Copenhagen, Denmark
33
Dpto. Astrofísica, Universidad de La Laguna (ULL),
38206
La Laguna, Tenerife,
Spain
34
European Southern Observatory, ESO Vitacura, Alonso de Cordova 3107, Vitacura, Casilla
19001, Santiago, Chile
35
European Space Agency, ESAC, Camino bajo del Castillo
s/n, Urbanización Villafranca del
Castillo, Villanueva de la Cañada, Madrid, Spain
36
European Space Agency, ESAC, Planck Science Office, Camino bajo
del Castillo s/n, Urbanización Villafranca del Castillo, Villanueva de la
Cañada, Madrid,
Spain
37
European Space Agency, ESTEC, Keplerlaan 1, 2201 AZ
Noordwijk, The
Netherlands
38
Finnish Centre for Astronomy with ESO (FINCA), University of
Turku, Väisäläntie 20,
21500, Piikkiö,
Finland
39
Helsinki Institute of Physics, Gustaf Hällströmin katu 2,
University of Helsinki, Helsinki, Finland
40
INAF - Osservatorio Astronomico di Padova, Vicolo
dell’Osservatorio 5, Padova, Italy
41
INAF - Osservatorio Astronomico di Roma, via di Frascati
33, Monte Porzio
Catone, Italy
42
INAF - Osservatorio Astronomico di Trieste,
via G.B. Tiepolo 11,
Trieste,
Italy
43
INAF/IASF Bologna, via Gobetti 101, Bologna, Italy
44
INAF/IASF Milano, via E. Bassini 15, Milano, Italy
45 IPAG (Institut de Planétologie et
d’Astrophysique de Grenoble), Université JosephFourier, Grenoble 1/CNRS-INSU, UMR 5274, Grenoble, 38041, France
46
ISDC Data Centre for Astrophysics, University of
Geneva, ch. d’Ecogia
16, Versoix,
Switzerland
47
Imperial College London, Astrophysics group, Blackett
Laboratory, Prince Consort
Road, London
SW7 2AZ,
UK
48
Infrared Processing and Analysis Center, California Institute of
Technology, Pasadena,
CA
91125,
USA
49
Institut Néel, CNRS, Université Joseph Fourier Grenoble
I, 25 rue des
Martyrs, Grenoble,
France
50
Institut d’Astrophysique Spatiale, CNRS (UMR8617) Université
Paris-Sud 11, Bâtiment
121, Orsay,
France
51
Institut d’Astrophysique de Paris, CNRS (UMR7095),
98bis boulevard Arago,
75014, Paris, France
52
Institut de Ciències de l’Espai, CSIC/IEEC, Facultat de
Ciències, Campus UAB, Torre C5
par-2, Bellaterra
08193,
Spain
53
Institute for Space Sciences, Bucharest-Magurale,
Romania
54
Institute of Astronomy and Astrophysics, Academia
Sinica, Taipei,
Taiwan
55
Institute of Astronomy, University of Cambridge,
Madingley Road, Cambridge
CB3 0HA,
UK
56 Institute of Theoretical
Astrophysics, University of Oslo, Blindern, Oslo,
Norway
57
Instituto de Astrofísica de Canarias, C/Vía Láctea s/n, La Laguna, Tenerife, Spain
58
Instituto de Física de Cantabria (CSIC-Universidad de
Cantabria), Avda. de los Castros
s/n, Santander,
Spain
59
Istituto di Fisica del Plasma, CNR-ENEA-EURATOM
Association, via R. Cozzi
53, Milano,
Italy
60
Jet Propulsion Laboratory, California Institute of
Technology, 4800
Oak Grove Drive, Pasadena, California, USA
61
Jodrell Bank Centre for Astrophysics, Alan Turing Building, School
of Physics and Astronomy, The University of Manchester, Oxford Road, Manchester
M13 9PL,
UK
62
Kavli Institute for Cosmology Cambridge,
Madingley Road, Cambridge
CB3 0HA,
UK
63
LERMA, CNRS, Observatoire de Paris, 61 avenue de l’Observatoire, Paris, France
64
Laboratoire AIM, IRFU/Service d’Astrophysique – CEA/DSM – CNRS –
Université Paris Diderot, Bât. 709,
CEA-Saclay, 91191
Gif-sur-Yvette Cedex,
France
65
Laboratoire de Physique Subatomique et de Cosmologie, CNRS/IN2P3,
Université Joseph Fourier Grenoble I, Institut National Polytechnique de
Grenoble, 53 rue des
Martyrs, 38026
Grenoble Cedex,
France
66
Laboratoire de l’Accélérateur Linéaire, Université Paris-Sud 11,
CNRS/IN2P3, Orsay,
France
67
Lawrence Berkeley National Laboratory,
Berkeley, California, USA
68
Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, 85741
Garching,
Germany
69
Max-Planck-Institut für Extraterrestrische Physik,
Giessenbachstraße, 85748
Garching,
Germany
70
Niels Bohr Institute, Blegdamsvej 17, Copenhagen, Denmark
71
Observational Cosmology, Mail Stop 367-17, California Institute of
Technology, Pasadena,
CA, 91125, USA
72
Optical Science Laboratory, University College
London, Gower
Street, London,
UK
73
SISSA, Astrophysics Sector, via Bonomea 265, 34136, Trieste, Italy
74
School of Physics and Astronomy, Cardiff University,
Queens Buildings, The Parade,
Cardiff
CF24 3AA,
UK
75
Space Research Institute (IKI), Russian Academy of
Sciences, Profsoyuznaya Str,
84/32, Moscow
117997,
Russia
76
Space Sciences Laboratory, University of California,
Berkeley, California, USA
77
Stanford University, Dept of Physics, Varian Physics
Bldg, 382 via Pueblo
Mall, Stanford,
California,
USA
78 Tartu Observatory,
Toravere, Tartumaa,
61602,
Estonia
79
Tuorla Observatory, Department of Physics and Astronomy,
University of Turku, Väisäläntie
20, 21500
Piikkiö,
Finland
80
UPMC Univ Paris 06, UMR7095, 98bis boulevard Arago, 75014
Paris,
France
81
Universität Heidelberg, Institut für Theoretische
Astrophysik, Albert-Überle-Str.
2, 69120
Heidelberg,
Germany
82
Université de Toulouse, UPS-OMP, IRAP,
31028
Toulouse Cedex 4,
France
83
University Observatory, Ludwig Maximilian University of
Munich, Scheinerstrasse
1, 81679
Munich,
Germany
84
University of Granada, Departamento de Física Teórica y del
Cosmos, Facultad de Ciencias, Granada, Spain
85
Warsaw University Observatory, Aleje Ujazdowskie 4, 00-478
Warszawa,
Poland
Received: 7 June 2011
Accepted: 11 July 2011
We present first results on PLCKG266.6−27.3, 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 isa 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 M500 = (7.8 ± 0.8) × 1014 M⊙. PLCKG266.6−27.3 is an exceptional system: its luminosity of LX [0.5−2.0 keV] = (1.4 ± 0.05) × 1045 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 ~ 1. Moreover, unlike the majority of high-redshift clusters, PLCKG266.6−27.3 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.
Key words: cosmology: observations / galaxies: clusters: general / galaxies: clusters: intracluster medium / X-rays: galaxies: clusters / cosmic background radiation
© ESO, 2011
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