J/A+A/665/A100 AMICO galaxy clusters in KiDS-DR3 (Lesci+, 2022)
AMICO galaxy clusters in KiDS-DR3: Constraints on cosmological parameters
and on the normalisation of the mass-richness relation from clustering.
Lesci G.F., Nanni L., Marulli F., Moscardini L., Veropalumbo A.,
Maturi M., Sereno M., Radovich M., Bellagamba F., Roncarelli M.,
Bardelli S., Castignani G., Covone G., Giocoli C., Ingoglia L., Puddu E.
<Astron. Astrophys. 665, A100 (2022)>
=2022A&A...665A.100L 2022A&A...665A.100L (SIMBAD/NED BibCode)
ADC_Keywords: Surveys ; Clusters, galaxy ; Redshifts
Keywords: galaxies: clusters: general - cosmology: observations -
large-scale structure of Universe - surveys
Abstract:
We analysed the clustering of a photometric sample of galaxy clusters
selected from the Third Data Release of the Kilo-Degree Survey,
focusing on the redshift-space two-point correlation function (2PCF).
We compared our measurements to theoretical predictions of the
standard Λ cold dark matter (ΛCDM) cosmological model.
We measured the 2PCF of the sample in the cluster-centric radial range
r ∈ [5,80]h-1Mpc, considering 4934 galaxy clusters with richness
λ*≥15 in the redshift range z ∈ [0.1,0.6]. A Markov chain
Monte Carlo analysis has been performed to constrain the cosmological
parameters Ωm, σ8, and
S8~σ8(Ωm/0.3)0.5, assuming Gaussian priors on the
mass-richness relation given by the posteriors obtained from a joint
analysis of cluster counts and weak lensing. In addition, we
constrained the normalisation of the mass-richness relation, α,
with fixed cosmological parameters.
We obtained Ωm=0.28+0.05-0.04,
σ8=0.82+0.14-0.12, and S8=0.80+0.08-0.08. The
constraint on S8 is consistent within 1σ with the results from
WMAP and Planck. Furthermore, by fixing the cosmological parameters to
those provided by Planck, we obtained α=0.12+0.06-0.06,
which is fully consistent with the result obtained from the joint
analysis of cluster counts and weak lensing performed for this sample.
Description:
Catalogue developed by Maturi et al. (2019MNRAS.485..498M 2019MNRAS.485..498M), containing
the AMICO detections in the KiDS-DR3 galaxy sample. The redshift range
is 0.1<z<0.8, the minimum signal-to-noise is 3.5, and the minimum
intrinsic richness is 15.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
ak3.dat 60 6143 Main properties of the clusters in the sample
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See also:
II/347 : KiDS-ESO-DR3 multi-band source catalog (de Jong+, 2017)
Byte-by-byte Description of file: ak3.dat
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Bytes Format Units Label Explanations
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1- 17 A17 --- Name Unique identification name: JHHMMSS.d+DDMMSS
19- 26 F8.4 deg RAdeg Right ascension (J2000)
28- 35 F8.4 deg DEdeg Declination (J2000)
37- 40 F4.2 --- z Redshift
42- 47 F6.2 --- lstar Intrinsic richness
49- 53 F5.2 --- S/N Signal-to-noise ratio
55- 60 F6.4 --- zfix Corrected redshift (1)
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Note (1): The redshift is biased, see Maturi et al. (2019MNRAS.485..498M 2019MNRAS.485..498M).
It is corrected as zfix=z-0.02*(1+z).
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Acknowledgements:
Giorgio Lesci, giorgio.lesci2(at)unibo.it
References:
Maturi et al., 2019MNRAS.485..498M 2019MNRAS.485..498M,
AMICO galaxy clusters in KiDS-DR3: sample properties and selection function
(End) Giorgio Lesci [University of Bologna], Patricia Vannier [CDS] 31-Aug-2022