J/A+A/661/A11 eFEDS. Masses of galaxy clusters and groups (Chui+, 2022)
The eROSITA Final Equatorial-Depth Survey (eFEDS). X-ray
observable-to-mass-and-redshift relations of galaxy clusters and groups with
weak-lensing mass calibration from the Hyper Suprime-Cam Subaru Strategic
Program survey.
Chiu I.-N., Ghirardini V., Liu A., Grandis S., Bulbul E., Bahar Y.,
Comparat J., Bocquet S., Clerc N., Klein M., Liu T., Li X., Miyatake H.,
Mohr J., More S., Oguri M., Okabe N., Pacaud F., Ramos-ceja M.E.,
Reiprich T.H., Schrabback T., Umetsu K.
<Astron. Astrophys., 661, A11 (2022)>
=2022A&A...661A..11C 2022A&A...661A..11C (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; X-ray sources
Keywords: galaxies: clusters: general -
galaxies: clusters: intracluster medium -
gravitational lensing: weak - large-scale structure of Universe -
cosmology: observations - dark energy
Abstract:
We present the first weak-lensing mass calibration and X-ray scaling
relations of galaxy clusters and groups selected in the eROSITA Final
Equatorial Depth Survey (eFEDS) observed by Spectrum Roentgen
Gamma/eROSITA over a contiguous footprint with an area of ~=140
deg2, using the three-year (S19A) weak-lensing data from the Hyper
Suprime-Cam (HSC) Subaru Strategic Program survey. In this work, we
study a sample of 434 optically confirmed galaxy clusters (and groups)
at redshift 0.01 ≤ z ≤ 1.3 with a median of 0.35, of which 313
systems are uniformly covered by the HSC survey to enable the
extraction of the weak-lensing shear observable. In a Bayesian
population modeling, we perform a blind analysis for the weak-lensing
mass calibration by simultaneously modeling the observed count rate
η and the shear profile g+ of individual clusters through the
count-rate-to-mass-and-redshift (η-M500-z) relation and the
weak-lensing-mass-to-mass-and-redshift (MWL-M500-z) relation,
respectively, while accounting for the bias in these observables using
simulation-based calibrations. As a result, the count-rate-inferred
and lensing-calibrated cluster mass is obtained from the joint
modeling of the scaling relations, as the ensemble mass spanning a
range of 1013h-1M☉ ≤ M500 ≤ 1015h-1M☉ with a
median of ~=1014h-1M☉ for the eFEDS sample. With the mass
calibration, we further model the X-ray
observable-to-mass-and-redshift relations, including the rest-frame
soft-band and bolometric luminosity (LX and Lb), the
emission-weighted temperature TX, the mass of intra-cluster medium
Mg, and the mass proxy YX, which is the product of TX and Mg.
Except for LX with a steeper dependence on the cluster mass at a
statistically significant level, we find that the other X-ray scaling
relations all show a mass trend that is statistically consistent with
the self-similar prediction at a level of ≤1.7σ. Meanwhile, all
these scaling relations show no significant deviation from the
self-similarity in their redshift scaling. Moreover, no significant
redshift-dependent mass trend is present. This work demonstrates the
synergy between the eROSITA and HSC surveys in preparation for the
forthcoming first-year eROSITA cluster cosmology.
Description:
We present the estimates of the cluster true mass for the eFEDS
clusters in Table C1. In addition to the secure sample of 434 clusters
with fcont<0.2, we also show the mass of clusters with 0.2≤fcont<0.3.
This leads to a total number of 457 clusters in Table C1.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
tablec1.dat 70 457 The estimates of the cluster true mass M500
of the eFEDS clusters
--------------------------------------------------------------------------------
See also:
J/A+A/661/A1 : The eFEDS X-ray catalogs (V7.4) (Brunner+, 2022)
J/A+A/661/A2 : Galaxy clusters and groups in eFEDS (Liu+, 2022)
Byte-by-byte Description of file: tablec1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 16 A16 --- Name eFEDS name (JHHMMSS.s+DDMMSS)
17 A1 --- n_Name [*] * for clusters with 20.1≤fcont<0.3
19- 24 F6.3 [Msun] logM500R0.2A Mass M500 with the core in the
weak-lensing mass calibration for
R>0.2h-1Mpc (in h1M☉ unit)
26- 31 F6.3 [Msun] logM500R0.2B Mass M500 without the core in the
weak-lensing mass calibration for
R>0.2h-1Mpc (in h1M☉ unit)
33- 37 F5.3 [Msun] e_logM500R0.2B Error on logM500R-0.2B
39- 44 F6.3 [Msun] logM500R0.5A Mass M500 with the core in the
weak-lensing mass calibration for
R>0.5h-1Mpc (in h1M☉ unit)
46- 51 F6.3 [Msun] logM500R0.5B Mass M500 without the core in the
weak-lensing mass calibration for
R>0.5h-1Mpc (in h1M☉ unit)
53- 57 F5.3 [Msun] e_logM500R0.5B Error on logM500R-0.5B
59- 64 F6.3 [Msun] logM500Rzsp ? Mass M500 estimated with spectroscopic
redshifts and without the core in the
weak-lensing calibration
66- 70 F5.3 [Msun] e_logM500Rzsp ? Error on logM500R-zsp
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 24-Aug-2022