J/ApJ/911/82 Sparsity & gas mass fraction of galaxy clusters (Corasaniti+, 2021)
Cosmological constraints from galaxy cluster sparsity, cluster gas mass
fraction, and baryon acoustic oscillation data.
Corasaniti P.-S., Sereno M., Ettori S.
<Astrophys. J., 911, 82 (2021)>
=2021ApJ...911...82C 2021ApJ...911...82C
ADC_Keywords: Clusters, galaxy; Surveys; Redshifts; Optical; X-ray sources
Keywords: Cosmological parameters from large-scale structure ; Cosmology ;
Galaxy clusters
Abstract:
In recent years, the availability of large, complete cluster samples
has enabled numerous cosmological parameter inference analyses using
cluster number counts. These have provided constraints on the cosmic
matter density Ωm and the amplitude of matter density
fluctuations σ8 alternative to that obtained from other
standard probes. However, systematics uncertainties, such as the mass
calibration bias and selection effects, may still significantly affect
these data analyses. Hence, it is timely to explore other proxies of
galaxy cluster cosmology that can provide cosmological constraints
complementary to those obtained from cluster number counts. Here we
use measurements of the cluster sparsity from weak-lensing mass
estimates of the LC2-single and HSC-XXL cluster catalogs to infer
constraints on a flat ΛCDM model. The cluster sparsity has the
advantage of being insensitive to selection and mass calibration bias.
On the other hand, it primarily constrains a degenerate combination of
Ωm and σ8 (along approximately constant curves of
S8=σ8(Ωm/0.3)0.5 and, to a lesser extent, the
reduced Hubble parameter h. Hence, in order to break the internal
parameter degeneracies, we perform a combined likelihood analysis of
the cluster sparsity estimates with cluster gas mass fraction
measurements and BAO data. We find marginal constraints that are
competitive with those from other standard cosmic probes:
Ωm=0.316±0.013, σ8=0.757±0.067 (corresponding to
S8=0.776±0.064), and h=0.696±0.017 at 1σ. Moreover,
assuming a conservative Gaussian prior on the mass bias of gas mass
fraction data, we find a lower limit on the gas depletion factor
Yb,500c≳0.89.
Description:
We estimate the sparsity of galaxy clusters using lensing mass
measurements from publicly available cluster catalogs at M500c and
M200c. In particular, we consider a selected sample of clusters from
the Literature Catalogs of Lensing Clusters (LC2;
Sereno 2015, J/MNRAS/450/3665) that includes as subsets the PSZ2Lens
(Sereno+ 2017MNRAS.472.1946S 2017MNRAS.472.1946S) and the Cluster Lensing and Supernova
Hubble (CLASH) project (Postman+ 2012, J/ApJS/199/25) catalogs. In
addition, we consider the Subaru Hyper Suprime-Cam (HSC) lensing mass
determinations (Umetsu+ 2020, J/ApJ/890/148) of an X-ray-selected
cluster sample from the XXL-XMM survey (Pierre+ 2016, IX/49), which we
refer to as the HSC-XXL sample.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 60 317 Galaxy clusters from the selected LC-single and
HSC-XXL catalogs
table2.dat 35 106 Galaxy cluster gas mass fractions
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See also:
B/xmm : XMM-Newton Obs. Log (XMM-Newton Science Operation Center, 2012)
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/A+A/521/A78 : Velocities in the A2345 cluster (Boschin+, 2010)
J/ApJS/199/25 : CLASH sources for MACS1149.6+2223 (Postman+, 2012)
J/ApJS/216/27 : Galaxy clusters in the SPT-SZ survey (Bleem+, 2015)
J/MNRAS/449/835 : Clustering of SDSS DR7 main galaxy sample. I. (Ross+, 2015)
J/MNRAS/450/3665 : CoMaLit. III. LC2 catalog (Sereno+, 2015)
J/A+A/594/A27 : Planck Sunyaev-Zeldovich sources (PSZ2) (Planck+, 2016)
J/ApJ/826/56 : HST/WFC3 obs. of Cepheids in SN Ia host gal. (Riess+, 2016)
J/ApJS/224/1 : redMaPPer cluster catalog from DES data (Rykoff+, 2016)
J/AJ/153/220 : NORAS II. I. First results (Bohringer+, 2017)
J/MNRAS/465/4914 : R-band light curves of HE 0435-1223 (Bonvin+, 2017)
J/A+A/601/A145 : Catalogue of cluster members (Foex+, 2017)
J/A+A/617/A64 : 3D density & temp. profiles of clusters (Bartalucci+, 2018)
J/ApJ/878/55 : SPT-SZ clusters with optical & X-ray data (Bocquet+, 2019)
J/A+A/633/A69 : KiDS-VIKING-450 cosmic shear (Hildebrandt+, 2020)
J/ApJ/890/148 : Concentration-mass relation for XXL clusters (Umetsu+, 2020)
http://github.com/pierste75/Halo_Sparsity : Halo_Sparsity code
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 20 A20 --- Name Galaxy Cluster Name
22- 26 F5.3 --- z [0.03/1.5] Redshift
28- 32 F5.2 10+14Msun M200c [0.07/57] Weak lensing estimated M200c mass
34- 38 F5.2 10+14Msun e_M200c [0.08/27] Uncertainty in M200c
40- 44 F5.2 10+14Msun M500c [0.05/30] Weak lensing estimated M200c mass
46- 50 F5.2 10+14Msun e_M500c [0.05/12] Uncertainty in M500c
52- 55 F4.2 --- S200500 [1.16/2] Sparsity (see Section 2.1)
57- 60 F4.2 --- e_S200500 [0.04/1.8] Uncertainty in S200500
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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- 16 A16 --- Name Galaxy Cluster Name
18- 23 F6.4 --- z [0.047/1.3] Redshift
25- 29 F5.3 --- fgas [0.02/0.3] Cluster gas mass fraction
(see Section 2.3)
31- 35 F5.3 --- e_fgas [0.005/0.2] Uncertainty in fgas
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 11-Oct-2022