J/MNRAS/455/892 Galaxy cluster concentration-mass relation (Groener+, 2016)
The galaxy cluster concentration-mass scaling relation.
Groener A.M., Goldberg D.M., Sereno M.
<Mon. Not. R. Astron. Soc., 455, 892-919 (2016)>
=2016MNRAS.455..892G 2016MNRAS.455..892G (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; Gravitational lensing
Keywords: gravitational lensing: strong - gravitational lensing: weak -
galaxies: clusters: general - dark matter
Abstract:
Scaling relations of clusters have made them particularly important
cosmological probes of structure formation. In this work, we present a
comprehensive study of the relation between two profile observables,
concentration (cvir) and mass (Mvir). We have collected the largest
known sample of measurements from the literature which make use of one
or more of the following reconstruction techniques: weak gravitational
lensing (WL), strong gravitational lensing (SL), weak+strong lensing
(WL+SL), the caustic method (CM), line-of-sight velocity dispersion
(LOSVD), and X-ray. We find that the concentration-mass (c-M)
relation is highly variable depending upon the reconstruction
technique used. We also find concentrations derived from dark
matter-only simulations (at approximately Mvir∼1014M☉) to be
inconsistent with the WL and WL+SL relations at the 1σ level,
even after the projection of triaxial haloes is taken into account.
However, to fully determine consistency between simulations and
observations, a volume-limited sample of clusters is required, as
selection effects become increasingly more important in answering
this. Interestingly, we also find evidence for a steeper WL+SL
relation as compared to WL alone, a result which could perhaps be
caused by the varying shape of cluster isodensities, though most
likely reflects differences in selection effects caused by these two
techniques. Lastly, we compare concentration and mass measurements of
individual clusters made using more than one technique, highlighting
the magnitude of the potential bias which could exist in such
observational samples.
Description:
In this paper, we have studied the observed concentration-mass
relation using all known cluster measurements to date. We also model
individual relations for the most commonly used reconstruction
techniques.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 213 781 Cluster concentrations and masses
refs.dat 89 85 References
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Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 21 A21 --- Cluster Cluster name
23- 28 F6.4 --- z Redshift
30- 31 I2 h RAh Right ascension (J2000)
33- 34 I2 min RAm Right ascension (J2000)
36- 40 F5.2 s RAs Right ascension (J2000)
42 A1 --- DE- Declination sign (J2000)
43- 44 I2 deg DEd Declination (J2000)
46- 47 I2 arcmin DEm Declination (J2000)
49- 52 F4.1 arcsec DEs Declination (J2000)
54- 58 A5 --- Method Method used
61- 65 F5.2 --- c200 Concentration parameter c200=R200/rs
66 A1 --- --- [+]
67- 71 F5.2 --- E_c200 ? Error on c200 (upper value)
72 A1 --- --- [-]
73- 77 F5.2 --- e_c200 ? Error on c200 (lower value)
79- 85 F7.3 10+14Msun M200 ?=- Total cluster mass at radius R200
86 A1 --- --- [+]
87- 93 F7.3 10+14Msun E_M200 ? Error on M200 (upper value)
94 A1 --- fEM200 [-i] i for +∞ for upper error
95-100 F6.3 10+14Msun e_M200 ? Error on M200 (lower value)
102-106 F5.2 --- cvir Viral concentration
107 A1 --- --- [+]
108-112 F5.2 --- E_cvir ? Error on cvir (upper value)
113 A1 --- --- [-]
114-118 F5.2 --- e_cvir ? Error on cvir (lower value)
121-127 F7.3 10+14Msun Mvir ?=- Virial mass
128 A1 --- --- [+]
129-136 F8.3 10+14Msun E_Mvir ? Error on Mvir (upper value)
137 A1 --- fEMvir [-i] i for +∞ for upper error
138-143 F6.3 10+14Msun e_Mvir ? Error on Mvir (lower value)
145-180 A36 --- Ref Reference, in refs.dat file
181-195 A15 --- delta Virial overdensity
197-201 F5.3 --- Omegam Cosmological parameter, Ωm
202 A1 --- --- [/]
203-207 F5.3 --- Omegal Cosmological parameter, Ωλ
208 A1 --- --- [/]
209-213 F5.3 --- h ?=- Cosmological parameter, h
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 36 A36 --- Ref Reference code
38- 56 A19 --- BibCode BibCode
58- 89 A32 --- Com Comments
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 12-Feb-2019