1. The X-ray properties of optically selected z > 0.6 clusters in the European Southern Observatory Distant Cluster Survey
- Author
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D. Clowe, O. Johnson, G. Rudnick, Philip Best, C. Halliday, Luc Simard, P. Jablonka, Simon D. M. White, Bianca M. Poggianti, Dennis Zaritsky, Bo Milvang-Jensen, Roberto P. Saglia, R. Pello, A. Aragon-Salamanca, SUPA School of Physics and Astronomy [Edinburgh], University of Edinburgh, Steward Observatory, University of Arizona, School of Physics and Astronomy [Nottingham], University of Nottingham, UK (UON), INAF - Osservatorio Astrofisico di Arcetri (OAA), Istituto Nazionale di Astrofisica (INAF), Galaxies, Etoiles, Physique, Instrumentation (GEPI), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Dark Cosmology Centre (DARK), Niels Bohr Institute [Copenhagen] (NBI), Faculty of Science [Copenhagen], University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH)-Faculty of Science [Copenhagen], University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH), Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France, INAF - Osservatorio Astronomico di Padova (OAPD), Max Planck Institute for Extraterrestrial Physics (MPE), Max-Planck-Gesellschaft, Max-Planck-Institut für Astrophysik (MPA), NRC Herzberg Institute of Astrophysics, National Research Council of Canada (NRC), University of Copenhagen = Københavns Universitet (KU)-University of Copenhagen = Københavns Universitet (KU)-Faculty of Science [Copenhagen], University of Copenhagen = Københavns Universitet (KU)-University of Copenhagen = Københavns Universitet (KU), and Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)
- Subjects
010504 meteorology & atmospheric sciences ,media_common.quotation_subject ,Astrophysics::High Energy Astrophysical Phenomena ,laxies: clusters: general ,Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,01 natural sciences ,Luminosity ,[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] ,Intracluster medium ,0103 physical sciences ,Cluster (physics) ,Surface brightness ,010303 astronomy & astrophysics ,Weak gravitational lensing ,Astrophysics::Galaxy Astrophysics ,0105 earth and related environmental sciences ,media_common ,Physics ,Astronomy and Astrophysics ,Redshift ,Galaxy ,Space and Planetary Science ,Sky ,galaxies: clusters: general: X-rays: galaxies: clusters ,X-rays: galaxies: clusters - Abstract
We present XMM–Newton observations of three optically selected z > 0.6 clusters from the European Southern Observatory (ESO) Distant Cluster Survey (EDisCS), comprising the first results of a planned X-ray survey of the full EDisCS high-redshift sample. The EDisCS clusters were identified in the Las Campanas Distant Cluster Survey as surface brightness fluctuations in the optical sky and their masses and galaxy populations are well described by extensive photometric and spectroscopic observations. We detect two of the three clusters in the X-ray and place a firm upper limit on diffuse emission in the third cluster field. We are able to constrain the X-ray luminosity and temperature of the detected clusters and estimate their masses. We find that the X-ray properties of the detected EDisCS clusters are similar to those of X-ray-selected clusters of comparable mass and – unlike other high-redshift, optically selected clusters – are consistent with the T–σ and LX–σ relations determined from X-ray-selected clusters at low redshift. The X-ray determined mass estimates are generally consistent with those derived from weak-lensing and spectroscopic analyses. These preliminary results suggest that the novel method of optical selection used to construct the EDisCS catalogue may, like selection by X-ray luminosity, be well suited for identification of relaxed, high-redshift clusters whose intracluster medium is in place and stable by z ∼ 0.8., The related data "X-ray properties of 3 EDisCS galaxy clusters (Johnson+, 2006)" is available in the VizieR Catalogue at http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=J%2FMNRAS%2F371%2F1777
- Published
- 2006
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