J/A+A/661/A7 X-ray properties of eFEDS clusters and groups (Bahar+, 2022)
The eROSITA Final Equatorial-Depth Survey (eFEDS).
X-ray properties and scaling relations of galaxy clusters and groups.
Bahar Y.E., Bulbul E., Clerc N., Ghirardini V., Liu A., Nandra K.,
Pacaud F., Chiu I-N., Comparat J., Ider-Chitham J., Klein M., Liu T.,
Merloni A., Migkas K., Okabe N., Ramos-Ceja M.E., Reiprich T.H.,
Sanders J.S., Schrabback T.
<Astron. Astrophys. 661, A7 (2022)>
=2022A&A...661A...7B 2022A&A...661A...7B (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; Surveys ; X-ray sources
Keywords: galaxies: clusters: general - galaxies: groups: general -
galaxies: clusters: intracluster medium - X-rays: galaxies: clusters
Abstract:
Scaling relations link the physical properties of clusters at cosmic
scales. They are used to probe the evolution of large-scale structure,
estimate observables of clusters, and constrain cosmological
parameters through cluster counts. We investigate the scaling
relations between X-ray observables of the clusters detected in the
eFEDS field using Spectrum-Roentgen-Gamma/eROSITA observations taking
into account the selection effects and the distributions of
observables with cosmic time. We extract X-ray observables (Lx, Lbol,
T, Mgas, Yx) within R500 for the sample of 542 clusters in the eFEDS
field. By applying detection and extent likelihood cuts, we construct
a subsample of 265 clusters with a contamination level of <10%
(including AGNs and spurious fluctuations) to be used in our scaling
relations analysis. The selection function based on the
state-of-the-art simulations of the eROSITA sky is fully accounted for
in our work. We provide the X-ray observables in the core- included
<R500 and core-excised 0.15*R500-R500 apertures for 542 galaxy
clusters and groups detected in the eFEDS field. Additionally, we
present our best-fit results for the normalization, slope, redshift
evolution, and intrinsic scatter parameters of the X-ray scaling
relations between Lx-T, Lx- Mgas, Lx-Yx, Lbol-T, Lbol-Mgas, Lbol-Yx,
and Mgas-T. We find that the best-fit slopes significantly deviate
from the self-similar model at a >4sigma confidence level, but our
results are nevertheless in good agreement with the simulations
including non-gravitational physics, and the recent results that take
into account selection effects. The strong deviations we find from the
self-similar scenario indicate that the non-gravitational effects play
an important role in shaping the observed physical state of clusters.
This work extends the scaling relations to the low-mass,
low-luminosity galaxy cluster and group regime using eFEDS
observations, demonstrating the ability of eROSITA to measure emission
from the intracluster medium out to R500 with survey-depth exposures
and constrain the scaling relations in a wide mass-luminosity-redshift
range.
Description:
This catalog contains X-ray properties and best-fit electron density
model parameters of 542 galaxy clusters and groups detected in the
eFEDS field. Table of X-ray properties includes temperature, soft band
(0.5-2.0keV) X-ray luminosity, bolometric (0.01-100keV) X-ray
luminosity, gass mass and Yx measurements. All the properties are
measured within apertures of R500. Additionally temperature, soft band
X-ray luminosity and bolometric X-ray luminosity are measured within
core-excluded apertures(0.15*R500-R500). X-ray observable
measurements <2sigma are presented as 2sigma upper limits except T500
and Tcex500. Table of best-fit electron density model parameters are
obtained using Vikhlinin et al. model (2006ApJ...640..691V 2006ApJ...640..691V).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 109 542 Electron density model parameters of
eFEDS clusters
table2.dat 279 542 X-ray observable measurements of eFEDS clusters
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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)
J/A+A/661/A3 : eFEDS counterparts to point-like sources (Salvato+, 2022)
J/A+A/661/A4 : eFEDS optical cluster and group catalog (Klein+, 2022)
J/A+A/661/A5 : The eFEDS AGN catalog (Liu+, 2022)
J/A+A/661/A8 : eFEDS catalogue of variable X-ray sources (Boller+, 2022)
J/A+A/661/A10 : eFEDS galaxy clusters and groups in disguise (Bulbul+, 2022)
J/A+A/661/A23 : Exoplanet X-ray irradiation & evaporation rates (Foster+, 2022)
J/A+A/661/A24 : Corona-chromosphere connection (Fuhrmeister+, 2022)
J/A+A/661/A29 : First eROSITA study of nearby M dwarfs (Magaudda+, 2022)
J/A+A/661/A34 : eta Cha cluster eROSITA X-ray scan (Robrade+, 2022)
J/A+A/661/A35 : eROSITA study of 47 Tuc globular cluster (Saeedi+, 2022)
J/A+A/661/A38 : SRG/ART-XC 1st year all-sky X-ray survey (Pavlinsky+, 2022)
J/A+A/661/A40 : eRASS1 X-ray sources Sco-Cen members (Schmitt+, 2022)
J/A+A/661/A44 : A first eROSITA view of ultracool dwarfs (Stelzer+, 2022)
https://erosita.mpe.mpg.de/edr/eROSITAObservations/Catalogues/ :
eROSITA-DE early data release catalogues
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- ID Cluster ID
17- 21 I5 --- ID-SRC Unique source ID
23- 28 F6.3 10-7cm-6 n0 n0 parameter of Vikhlinin06 model (1)
30- 35 F6.3 10-7cm-6 e_n0 Minus side error bar on n0
37- 43 F7.3 10-7cm-6 E_n0 Plus side error bar on n0
45- 49 F5.1 arcsec rs rs parameter of Vikhlinin06 model (1)
51- 55 F5.1 arcsec e_rs Minus side error bar on rs
57- 61 F5.1 arcsec E_rs Plus side error bar on rs
63- 66 F4.2 --- epsilon epsilon parameter of Vikhlinin06 model (1)
68- 71 F4.2 --- e_epsilon Minus side error bar on epsilon
73- 76 F4.2 --- E_epsilon Plus side error bar on epsilon
78- 82 F5.3 --- beta beta parameter of Vikhlinin06 model (1)
84- 88 F5.3 --- e_beta Minus side error bar on beta
90- 94 F5.3 --- E_beta Plus side error bar on beta
96- 99 F4.2 --- alpha alpha parameter of Vikhlinin06 model (1)
101-104 F4.2 --- e_alpha Minus side error bar on alpha
106-109 F4.2 --- E_alpha Plus side error bar on alpha
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Note (1): Vikhlinin et al. (2006ApJ...640..691V 2006ApJ...640..691V).
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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- 15 A15 --- ID Cluster ID (HHMMSS.s+DDMMSS)
17- 21 I5 --- ID-SRC Unique source ID
23- 30 F8.4 deg RAdeg Right ascension (J2000.0)
32- 38 F7.4 deg DEdeg Declination (J2000.0)
40- 44 F5.1 --- ExtLike Extent likelihood
46- 51 F6.1 --- DetLike Detection likelihood
53- 57 F5.3 --- z Redshift
59- 64 F6.3 arcmin R500 R500
66- 71 F6.3 keV T500 Temperature within R500
73- 78 F6.3 keV e_T500 Minus side error bar on T500
80- 85 F6.3 keV E_T500 Plus side error bar on T500
87 A1 --- l_Lx500 Limit flag on Lx500
88- 94 F7.3 10+35W Lx500 Soft band lumin within R500
(in 1042erg/s)
96-102 F7.3 10+35W e_Lx500 ? Minus side error bar on Lx500
104-111 F8.3 10+35W E_Lx500 ? Minus side error bar on Lx500
113 A1 --- l_Lbol500 Limit flag on Lbol500
114-121 F8.3 10+35W Lbol500 Bolometric lumin within R500
123-130 F8.3 10+35W e_Lbol500 ? Minus side error bar on Lbol500
132-139 F8.3 10+35W E_Lbol500 ? Plus side error bar on Lbol500
141 A1 --- l_Mgas500 Limit flag on Mgas500
142-148 F7.4 10+12Msun Mgas500 Gas mass within R500
150-157 F8.4 10+12Msun e_Mgas500 ? Minus side error bar on Mgas500
159-166 F8.4 10+12Msun E_Mgas500 ? Plus side error bar on Mgas500
168 A1 --- l_Yx500 Limit flag on Yx500
169-177 F9.4 10+12keV.Msun Yx500 Yx (gas mass times mean X-ray spectral
temperature) within R500
179-187 F9.4 10+12keV.Msun e_Yx500 ? Minus side error bar on Yx500
189-197 F9.4 10+12keV.Msun E_Yx500 ? Plus side error bar on Yx500
199-204 F6.3 keV Tcex500 Temperature within 0.15*R500-R500
206-211 F6.3 keV e_Tcex500 Minus side error bar on Tcex500
213-218 F6.3 keV E_Tcex500 Plus side error bar on Tcex500
220 A1 --- l_Lxcex500 Limit flag on Lxcex500
221-227 F7.3 10+35W Lxcex500 Soft band lumin within 0.15*R500-R500
229-235 F7.3 10+35W e_Lxcex500 ? Minus side error bar on Lxcex500
237-244 F8.3 10+35W E_Lxcex500 ? Plus side error bar on Lxcex500
246 A1 --- l_Lbolcex500 Limit flag on Lbolcex500
247-257 F11.3 10+35W Lbolcex500 Bolometric lumin within 0.15*R500-R500
259-265 F7.2 10+35W e_Lbolcex500 ? Minus side error bar on Lbolcex500
267-274 F8.3 10+35W E_Lbolcex500 ? Plus side error bar on Lbolcex500
276-279 I4 s Texp Vignetted exposure at cluster center
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Acknowledgements:
Y. Emre Bahar, ebahar(at)mpe.mpg.de
References:
The Early Data Release of eROSITA and Mikhail Pavlinsky ART-XC on the
SRG mission, 2022, A&A, 661, A1-A46
(End) Y. Emre Bahar [MPE, Germany], Patricia Vannier [CDS] 21-Jan-2022