J/ApJ/867/12 Mass-richness relations for X-ray and SZE clusters (Rettura+, 2018)
Mass-richness relations for X-ray and SZE-selected clusters at 0.4<z<2.0
as seen by Spitzer at 4.5µm.
Rettura A., Chary R., Krick J., Ettori S.
<Astrophys. J., 867, 12-12 (2018)>
=2018ApJ...867...12R 2018ApJ...867...12R
ADC_Keywords: Clusters, galaxy; Redshifts; X-ray sources; Infrared sources
Keywords: cosmology: observations;
galaxies: clusters: general galaxies: high-redshift;
galaxies: statistics; infrared: galaxies large-scale structure of
universe
Abstract:
We study the mass-richness relation of 116 spectroscopically confirmed
massive clusters at 0.4<z<2 by mining the Spitzer archive. We
homogeneously measure the richness at 4.5um for our cluster sample
within a fixed aperture of 2' radius and above a fixed brightness
threshold, making appropriate corrections for both background galaxies
and foreground stars. We have two subsamples, those which have (a)
literature X-ray luminosities and (b) literature Sunyaev-Zel'dovich
effect masses. For the X-ray subsample we re-derive masses adopting
the most recent calibrations. We then calibrate an empirical
mass-richness relation for the combined sample spanning more than one
decade in cluster mass and find the associated uncertainties in mass
at fixed richness to be ±0.25dex. We study the dependence of the
scatter of this relation with galaxy concentration, defined as the
ratio between richness measured within an aperture radius of 1' and
2'. We find that at fixed aperture radius the scatter increases for
clusters with higher concentrations. We study the dependence of our
richness estimates with depth of the 4.5um imaging data and find that
reaching a depth of at least [4.5]=21(AB)mag is sufficient to derive
reasonable mass estimates. We discuss the possible extension of our
method to the mid-infrared WISE All Sky Survey data and the
application of our results to the Euclid mission. This technique makes
richness-based cluster mass estimates available for large samples of
clusters at very low observational cost.
Description:
Our aim is to assemble a large sample of clusters with known masses
and redshifts for which archival IRAC data at 4.5um is publicly
available. We define two cluster subsamples based on literature X-ray
masses and literature SZE masses.
The starting point for this sample is the Meta-catalog of X-ray
detected clusters of galaxies (MCXC), a catalog of compiled properties
of X-ray detected clusters of galaxies (Piffaretti+ 2011, J/A+A/534/A109
and references therein).
We searched for Spitzer/IRAC archival observations homogeneously
covering at least an area within a 2.5arcmin radius from the cluster
center coordinates and with a minimum exposure time of 90s. This depth
ensures that we reach at least a 5σ sensitivity limit of
21.46 AB mag (9.4uJy) at 4.5um.
The final X-ray-selected sample comprised 47 galaxy clusters at
0.4<z<1.27.
We have mined the Spitzer/IRAC archive and drawn a heterogeneous
sample of spectroscopically confirmed SZE-selected clusters.
The final SZE-selected sample considered in our study is comprised of
69 galaxy clusters at 0.4<z<2.0.
In particular, our sample is comprised of 4 clusters from the Planck
Cluster Catalog (Planck Collaboration+ 2015, J/A+A/581/A14),
4 clusters from the Massive Distant Clusters of WISE Survey (MADCoWS,
Brodwin+ 2015ApJ...806...26B 2015ApJ...806...26B), 1 cluster from the IRAC Distant Cluster
Survey (IDCS, Brodwin+ 2012ApJ...753..162B 2012ApJ...753..162B), 1 cluster from the
XMM-Newton Large Scale Structure Survey (XLSSU, Pierre+
2011MNRAS.414.1732P 2011MNRAS.414.1732P and Mantz+ 2014ApJ...794..157M 2014ApJ...794..157M), and 59 clusters
from the SPT-SZ Cluster Survey (SPT-SZ, Bleem+ 2015, J/ApJS/216/27)
File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 90 47 X-ray selected cluster sample
table2.dat 106 69 SZE-selected cluster sample
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See also:
IX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1999)
VIII/91 : Planck Catalog of Compact Sources Release 1 (Planck, 2013)
IX/49 : XXL Survey: First results (Pierre+, 2016)
IX/52 : XXL Survey. DR2 (Chiappetti+, 2018)
J/ApJ/502/558 : Catalog of ROSAT galaxy clusters (Vikhlinin+ 1998)
J/ApJS/129/435 : NORAS galaxy cluster survey. I. (Bohringer+, 2000)
J/A+A/397/431 : Redshifts of ABCG209 galaxies (Mercurio+, 2003)
J/A+A/432/381 : VLT spectroscopic survey of RX J0152.7-1357 (Demarco+, 2005)
J/ApJ/660/239 : MaxBCG cat. of galaxy clusters from SDSS (Koester+, 2007)
J/ApJ/663/164 : VLT & ACS observations in RDCS J1252.9-2927 (Demarco+, 2007)
J/ApJ/684/905 : z>1 clusters from IRAC Shallow Survey (Eisenhardt+, 2008)
J/ApJ/701/428 : The Spitzer Deep, Wide-Field Survey (SDWFS) (Ashby+, 2009)
J/ApJS/191/254 : GMBCG galaxy cluster catalog from SDSS DR7 (Hao+, 2010)
J/ApJS/191/340 : Southern Cosmology Survey. II. (Menanteau+, 2010)
J/A+A/534/109 : MCXC Meta-Catalog X-ray galaxy Clusters (Piffaretti+, 2011)
J/A+A/535/4 : X-ray galaxy clusters study (Reichert+, 2011)
J/ApJ/746/178 : The augmented maxBCG cluster catalog (Rykoff+, 2012)
J/ApJS/199/34 : Clusters of galaxies in SDSS-III (Wen+, 2012)
J/ApJ/769/79 : Spitzer obs. of radio-loud AGNs (CARLA) (Wylezalek+, 2013)
J/A+A/559/A2 : Redshifts around MRC 0156-252 (Galametz+, 2013)
J/ApJ/785/104 : redMaPPer. I. Algorithm applied to SDSS DR8 (Rykoff+, 2014)
J/MNRAS/444/147 : Richness of galaxy clusters (Oguri, 2014)
J/ApJ/807/178 : New rich galaxy clusters in SDSS-DR12 (Wen+, 2015)
J/ApJS/216/20 : Blanco Cosmology Survey (BCS) new reduction (Bleem+, 2015)
J/ApJS/216/27 : Galaxy clusters discovered in SPT-SZ survey (Bleem+, 2015)
J/MNRAS/450/3665 : CoMaLit. III. LC2 catalog (Sereno+, 2015)
J/A+A/581/14 : Updated Planck catalogue PSZ1 (Planck+, 2015)
J/A+A/587/A158 : Rich galaxy clusters richness-based masses (Andreon, 2016)
J/MNRAS/457/4515 : X-ray_peak-BCG offset for PSZ1 clusters (Rossetti+, 2016)
J/MNRAS/455/892 : Galaxy cluster concentration-mass relation (Groener+, 2016)
J/A+A/614/A82 : Cluster cand. for joint X-rays & SZ surveys (Tarrio+, 2018)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- ID [26/1658] Cluster number (1)
6- 13 F8.4 deg RAdeg Right ascension (J2000)
15- 22 F8.4 deg DEdeg Declination (J2000)
24- 42 A19 --- Name Other name of the cluster
44- 49 F6.4 --- z [0.4/1.3] Redshift
from Piffaretti+, 2011, J/A+A/534/A109
51- 56 F6.3 [Msun] logM500 [14.1/15.3] log of total cluster mass
within R500
58- 62 F5.3 [Msun] e_logM500 [0.02/0.05] logM500 uncertainty
64- 68 F5.3 --- logR4.5um [0.8/2] log of richness parameter,
R[4.5]; in units of galaxies.Mpc-2 (G1)
70- 74 F5.3 --- e_logR4.5um [0.04/0.2] logR4.5um negative uncertainty
76- 80 F5.3 --- E_logR4.5um [0.04/0.2] logR4.5um positive uncertainty
82- 84 I3 --- Ncl [101/242] Number of sources brighter
than the [4.5]cut=21 AB, within 2'
from the cluster center (G1)
86- 90 F5.2 --- Ns [8/63] Number of stars with [4.5]<21 within
2' from the center of each cluster (G1)
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Note (1): Sequential number from Table 2 of Piffaretti+, 2011, J/A+A/534/A109 --
in Simbad.
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- ID Cluster identifier
7- 16 F10.6 deg RAdeg Right ascension (J2000)
18- 27 F10.6 deg DEdeg Declination (J2000)
29- 50 A22 --- Name Other name of the cluster
52 A1 --- r_logM500 Reference for log(M500) (1)
54- 59 F6.4 --- z [0.4/2] Redshift
61- 66 F6.3 [Msun] logM500 [14.1/15.2] log of total cluster mass
within R500
68- 72 F5.3 [Msun] e_logM500 [0.01/0.09] logM500 negative uncertainty
74- 78 F5.3 [Msun] E_logM500 [0.01/0.08] logM500 positive uncertainty
80- 84 F5.3 --- logR4.5um [0.8/1.8] log of richness parameter,
R[4.5]; in units of galaxies.Mpc-2 (G1)
86- 90 F5.3 --- e_logR4.5um [0.05/0.2] logR4.5um negative uncertainty
92- 96 F5.3 --- E_logR4.5um [0.05/0.2] logR4.5um positive uncertainty
98-100 I3 --- Ncl [100/194] Number of sources brighter
than the [4.5]cut=21 AB, within 2'
from the cluster center (G1)
102-106 F5.2 --- Ns [9/57] Number of stars with [4.5]<21 within
2' from the center of each cluster (G1)
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Note (1): M500,SZ values as reported in the following references:
1 = Brodwin et al. 2015ApJ...806...26B 2015ApJ...806...26B
2 = Brodwin et al. 2012ApJ...753..162B 2012ApJ...753..162B
3 = Mantz et al. 2014ApJ...794..157M 2014ApJ...794..157M
4 = Bleem et al. 2015, J/ApJS/216/27
5 = Planck Collaboration 2015, J/A+A/581/A14
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Global notes:
Note (G1): We define a richness parameter, R[4.5], as the
background-subtracted projected surface density of sources with [4.5]<21 AB
within 2 arcmin from the cluster center.
See Equation (2): R[4.5]=Ncl-<Nfield>-(Ns-Ns,field) with
<Nfield>, the mean of the Gaussian fit which is used for the source
background correction and
Ns,field, the average number of stars value for the Spitzer UKIDSS
Ultra Deep Survey (SpUDS, Dye+ 2006MNRAS.372.1227D 2006MNRAS.372.1227D) field.
See section 4 for further explanations.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie FIX [CDS] 15-Oct-2019