J/A+A/546/A6 Metal abundances of galaxy clusters (Andreon, 2012)
The enrichment history of the intracluster medium: a Bayesian approach.
Anfreon S.
<Astron. Astrophys. 546, A6 (2012)>
=2012A&A...546A...6A 2012A&A...546A...6A
ADC_Keywords: Clusters, galaxy ; Redshifts ; Abundances
Keywords: galaxies: clusters: general -
galaxies: clusters: intracluster medium - X-ray: diffuse background -
methods: statistical
Abstract:
This work measures the evolution of the iron content in galaxy
clusters by a rigorous analysis of the data of 130 clusters at
0.1<z<1.3. This task is made difficult by a) the low signal-to-noise
ratio of abundance measurements and the upper limits, b) possible
selection effects, c) boundaries in the parameter space,
d) non-Gaussian errors, e) the intrinsic variety of the objects
studied, and f) abundance systematics. We introduce a Bayesian model
to address all these issues at the same time, thus allowing cross-talk
(covariance).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 47 130 Id, Redshift, metal abundances, temperatures,
and their σ values, and data source
(zero for Chandra, one for XMM--Newton)
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See also:
J/ApJS/174/117 : Properties and metal abundances of clusters (Maughan+, 2008)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 17 A17 --- Name Cluster name (1)
19- 23 F5.3 --- z Redshift (1)
25- 29 F5.2 [Sun] Z Metal abundance, modeZ{Fe,i},
in Z_{Fe,☉} units
31- 34 F4.2 [Sun] e_Z rms uncertainty on Z, in Z_{Fe,☉} units
36- 40 F5.2 keV T Temperature, modeTi
42- 45 F4.2 keV e_T rms uncertainty on T
47 I1 --- Ref [0/1] Data source:
0 for Chandra, 1 for XMM-Newton
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Note (1): From Maughan et al. (2008, Cat. J/ApJS/174/117) or Anderson et
al. (2009ApJ...698..317A 2009ApJ...698..317A).
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Acknowledgements:
Stefano Andreon, stefano.andreon(at)brera.inaf.it
(End) Patricia Vannier [CDS] 23-Aug-2012