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The extended ROSAT-ESO Flux Limited X-ray Galaxy Cluster Survey (REFLEX II) : II. Construction and Properties of the Survey

Böhringer, Hans and Chon, Gayong and Collins, Chris A. and Guzzo, Luigi and Nowak, Nina and Bobrovskyi, Sergei (2013) The extended ROSAT-ESO Flux Limited X-ray Galaxy Cluster Survey (REFLEX II) : II. Construction and Properties of the Survey. Astronomy and Astrophysics. EDP Sciences. ISSN 0004-6361

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Abstract

Context. Galaxy clusters provide unique laboratories to study astrophysical processes on large scales and are important probes for cosmology. X-ray observations are currently the best means of detecting and characterizing galaxy clusters. Therefore X-ray surveys for galaxy clusters are one of the best ways to obtain a statistical census of the galaxy cluster population. Aims. In this paper we describe the construction of the REFLEX II galaxy cluster survey based on the southern part of the ROSAT All-Sky Survey. REFLEX II extends the REFLEX I survey by a factor of about two down to a flux limit of 1.8 × 10−12 erg s−1 cm−2 (0.1 - 2.4 keV). Methods. We describe the determination of the X-ray parameters, the process of X-ray source identification, and the construction of the survey selection function. Results. The REFLEX II cluster sample comprises currently 919 objects. A standard selection function is derived for a lower source count limit of 20 photons in addition to the flux limit. The median redshift of the sample is z = 0.102. Internal consistency checks and the comparison to several other galaxy cluster surveys imply that REFLEX II is better than 90% complete with a contamination less than 10%. Conclusions. With this publication we give a comprehensive statistical description of the REFLEX II survey and provide all the complementary information necessary for a proper modelling of the survey for astrophysical and cosmological applications.

Item URL in elib:https://elib.dlr.de/79925/
Document Type:Article
Title:The extended ROSAT-ESO Flux Limited X-ray Galaxy Cluster Survey (REFLEX II) : II. Construction and Properties of the Survey
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Böhringer, HansMax Planck Institut für extraterrestrische PhysikUNSPECIFIED
Chon, GayongMax Planck Institut für extraterrestrische PhysikUNSPECIFIED
Collins, Chris A.Astrophysics Research Institute, Liverpool John Moores UniversityUNSPECIFIED
Guzzo, LuigiINAF-Osservatorio Astronomico di Brera-MerateUNSPECIFIED
Nowak, NinaMax Planck Institut für PhysikUNSPECIFIED
Bobrovskyi, Sergeisergei.bobrovskyi (at) dlr.deUNSPECIFIED
Date:2013
Journal or Publication Title:Astronomy and Astrophysics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Publisher:EDP Sciences
ISSN:0004-6361
Status:Published
Keywords:X-rays: galaxies: clusters, Galaxies: clusters: Intergalactic medium, Cosmology: observations
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Explorationsstudien
Location: Oberpfaffenhofen
Institutes and Institutions:Space Operations and Astronaut Training > Controlling und Akquisition RB
Deposited By: Bobrovskyi, Sergei
Deposited On:08 Jan 2013 08:45
Last Modified:08 Mar 2018 18:54

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