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http://hdl.handle.net/20.500.12386/28825
Titolo: | AMICO galaxy clusters in KiDS-DR3: weak lensing mass calibration | Autori: | Bellagamba, Fabio Sereno, Mauro RONCARELLI, Mauro Maturi, Matteo RADOVICH, MARIO BARDELLI, Sandro PUDDU, Emanuella Anna MOSCARDINI, LAURO GETMAN, FEDOR Hildebrandt, Hendrik NAPOLITANO, NICOLA ROSARIO |
Data pubblicazione: | 2019 | Rivista: | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | Numero: | 484 | Fascicolo: | 2 | Da pagina:: | 1598 | Abstract: | We present the mass calibration for galaxy clusters detected with the AMICO code in KiDS DR3 data. The cluster sample comprises 7000 objects and covers the redshift range 0.1 < z < 0.6. We perform a weak lensing stacked analysis by binning the clusters according to redshift and two different mass proxies provided by AMICO, namely the amplitude A (measure of galaxy abundance through an optimal filter) and the richness λ* (sum of membership probabilities in a consistent radial and magnitude range across redshift). For each bin, we model the data as a truncated NFW profile plus a two-halo term, taking into account uncertainties related to concentration and miscentring. From the retrieved estimates of the mean halo masses, we construct the A-M<SUB>200</SUB> and the λ*-M<SUB>200</SUB> relations. The relations extend over more than 1 order of magnitude in mass, down to M_{200} ∼ 2 (5) × 10^{13} M_☉ h^{-1} at z = 0.2 (0.5), with small evolution in redshift. The logarithmic slope is 2.0 for the A-mass relation, and 1.7 for the λ*-mass relation, consistent with previous estimations on mock catalogues and coherent with the different nature of the two observables. | URI: | http://hdl.handle.net/20.500.12386/28825 | URL: | https://academic.oup.com/mnras/article/484/2/1598/5289902 | ISSN: | 0035-8711 | DOI: | 10.1093/mnras/stz090 | Bibcode ADS: | 2019MNRAS.484.1598B | Fulltext: | open |
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