The XXL Survey: XX. The 365 cluster catalogue
Artikel i vetenskaplig tidskrift, 2018

Context. In the currently debated context of using clusters of galaxies as cosmological probes, the need for well-defined cluster samples is critical. Aims. The XXL Survey has been specifically designed to provide a well characterised sample of some 500 X-ray detected clusters suitable for cosmological studies. The main goal of present article is to make public and describe the properties of the cluster catalogue in its present state, as well as of associated catalogues of more specific objects such as super-clusters and fossil groups. Methods. Following from the publication of the hundred brightest XXL clusters, we now release a sample containing 365 clusters in total, down to a flux of a few 10-15 erg s-1 cm-2 in the [0.5-2] keV band and in a 1′ aperture. This release contains the complete subset of clusters for which the selection function is well determined plus all X-ray clusters which are, to date, spectroscopically confirmed. In this paper, we give the details of the follow-up observations and explain the procedure adopted to validate the cluster spectroscopic redshifts. Considering the whole XXL cluster sample, we have provided two types of selection, both complete in a particular sense: one based on flux-morphology criteria, and an alternative based on the [0.5-2] keV flux within 1 arcmin of the cluster centre. We have also provided X-ray temperature measurements for 80% of the clusters having a flux larger than 9 × 10-15 erg s-1 cm-2. Results. Our cluster sample extends from z ∼ 0 to z ∼ 1.2, with one cluster at z ∼ 2. Clusters were identified through a mean number of six spectroscopically confirmed cluster members. The largest number of confirmed spectroscopic members in a cluster is 41. Our updated luminosity function and luminosity-temperature relation are compatible with our previous determinations based on the 100 brightest clusters, but show smaller uncertainties. We also present an enlarged list of super-clusters and a sample of 18 possible fossil groups. Conclusions. This intermediate publication is the last before the final release of the complete XXL cluster catalogue when the ongoing C2 cluster spectroscopic follow-up is complete. It provides a unique inventory of medium-mass clusters over a 50 deg2 area out to z ∼ 1.

Large-scale structure of Universe

Galaxies: clusters: intracluster medium

Galaxies: groups: general

Galaxies: clusters: general

Författare

C. Adami

Laboratoire d'Astrophysique de Marseille

P. Giles

University of Bristol

E. Koulouridis

Institut de Recherche sur les Lois Fondamentales de l'Univers

F. Pacaud

Universität Bonn

C. Caretta

Universidad de Guanajuato

Laboratoire d'Astrophysique de Marseille

M. Pierre

Institut de Recherche sur les Lois Fondamentales de l'Univers

D. Eckert

Universite de Geneve

M. E. Ramos-Ceja

Universität Bonn

F. Gastaldello

INAF Istituto di Astrofisica Spaziale e Fisica Cosmica, Milan

S. Fotopoulou

Durham University

V. Guglielmo

Università di Padova

Laboratoire d'Astrophysique de Marseille

Osservatorio Astronomico di Padova

T. Sadibekova

Institut de Recherche sur les Lois Fondamentales de l'Univers

A. Iovino

Osservatorio Astronomico di Brera

B. Maughan

University of Bristol

L. Chiappetti

INAF Istituto di Astrofisica Spaziale e Fisica Cosmica, Milan

S. Alis

Istanbul Universitesi

B. Altiéri

European Space Astronomy Centre (ESA)

I. Baldry

Liverpool John Moores University

D. Bottini

INAF Istituto di Astrofisica Spaziale e Fisica Cosmica, Milan

M. Birkinshaw

University of Bristol

M. Bremer

University of Bristol

M. Brown

Monash University

O. Cucciati

INAF Istituto di Astrofisica Spaziale e Fisica Cosmica, Bologna

Universita di Bologna

S. Driver

ICRAR

University of St Andrews

E. Elmer

University of Nottingham

S. Ettori

INAF Istituto di Astrofisica Spaziale e Fisica Cosmica, Bologna

Istituto Nazionale Di Fisica Nucleare, Frascati

A. E. Evrard

University of Michigan

L. Faccioli

Institut de Recherche sur les Lois Fondamentales de l'Univers

B. Granett

Universita degli Studi di Milano

Osservatorio Astronomico di Brera

M. Grootes

Max Planck-institutet

L. Guzzo

Universita degli Studi di Milano

Osservatorio Astronomico di Brera

A. Hopkins

Australian Astronomical Observatory

Cathy Horellou

Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik, Extragalaktisk astrofysik

J. P. Lefèvre

Institut de Recherche sur les Lois Fondamentales de l'Univers

J. Liske

Universität Hamburg

K. Malek

Narodowe Centrum Badan Jadrowych, Warszawa

F. Marulli

Universita di Bologna

Istituto Nazionale Di Fisica Nucleare, Frascati

INAF Istituto di Astrofisica Spaziale e Fisica Cosmica, Bologna

S. Maurogordato

Université Nice Sophia Antipolis (UNS)

M. Owers

Macquarie University

Australian Astronomical Observatory

S. Paltani

Universite de Geneve

B. M. Poggianti

Osservatorio Astronomico di Padova

M. Polletta

Aix Marseille Université

Université de Toulouse

INAF Istituto di Astrofisica Spaziale e Fisica Cosmica, Milan

M. Plionis

National Observatory of Athens

Aristotle University of Thessaloniki

A. Pollo

Uniwersytet Jagiellonski w Krakowie

Narodowe Centrum Badan Jadrowych, Warszawa

E. Pompei

European Southern Observatory Santiago

T. J. Ponman

University of Birmingham

D. Rapetti

University of Colorado at Boulder

NASA Ames Research Center

M. Ricci

Université Nice Sophia Antipolis (UNS)

A. Robotham

ICRAR

University of St Andrews

R. Tuffs

Max Planck-institutet

L. Tasca

Laboratoire d'Astrophysique de Marseille

I. Valtchanov

European Space Astronomy Centre (ESA)

D. Vergani

INAF Istituto di Astrofisica Spaziale e Fisica Cosmica, Bologna

G. Wagner

University of Oxford

Merton College

J. Willis

University of Victoria

Astronomy and Astrophysics

0004-6361 (ISSN) 1432-0746 (eISSN)

Vol. 620 A5

Ämneskategorier

Analytisk kemi

Astronomi, astrofysik och kosmologi

Bioinformatik och systembiologi

DOI

10.1051/0004-6361/201731606

Mer information

Senast uppdaterat

2018-12-10