The PSZ-MCMF catalogue of Planck clusters over the DES region
Creators: name: Hernández-Lang, D.
name: Klein, M.
name: Mohr, J. J.
name: Grandis, S.
name: Melin, J. -B.
name: Tarrío, P.
name: Arnaud, M.
name: Pratt, G. W.
name: Abbott, T. M. C.
name: Aguena, M.
name: Alves, O.
name: Andrade-Oliveira, F.
name: Bacon, D.
name: Bertin, E.
name: Brooks, D.
name: Burke, D. L.
name: Rosell, A. Carnero
name: Kind, M. Carrasco
name: Carretero, J.
name: Castander, F. J.
name: Costanzi, M.
name: da Costa, L. N.
name: Pereira, M. E. S.
name: Desai, S.
name: Diehl, H. T.
name: Doel, P.
name: Everett, S.
name: Ferrero, I.
name: Flaugher, B.
name: Frieman, J.
name: García-Bellido, J.
name: Gruen, D.
name: Gruendl, R. A.
name: Gschwend, J.
name: Gutierrez, G.
name: Hinton, S. R.
name: Hollowood, D. L.
name: Honscheid, K.
name: James, D. J.
name: Kuehn, K.
name: Kuropatkin, N.
name: Lahav, O.
name: Lidman, C.
name: Melchior, P.
name: Mena-Fernández, J.
name: Menanteau, F.
name: Miquel, R.
name: Palmese, A.
name: Paz-Chinchón, F.
name: Pieres, A.
name: Malagón, A. A. Plazas
name: Raveri, M.
name: Rodriguez-Monroy, M.
name: Romer, A. K.
name: Scarpine, V.
name: Sevilla-Noarbe, I.
name: Smith, M.
name: Suchyta, E.
name: Tarle, G.
name: Thomas, D.
name: Weaverdyck, N.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: We present the first systematic follow-up of Planck Sunyaev-Zeldovich effect (SZE) selected candidates down to signal-to-noise (S/N) of 3 over the 5000 deg$^2$ covered by the Dark Energy Survey. Using the MCMF cluster confirmation algorithm, we identify optical counterparts, determine photometric redshifts and richnesses and assign a parameter, $f_{\rm cont}$, that reflects the probability that each SZE-optical pairing represents a random superposition of physically unassociated systems rather than a real cluster. The new PSZ-MCMF cluster catalogue consists of 853 MCMF confirmed clusters and has a purity of 90%. We present the properties of subsamples of the PSZ-MCMF catalogue that have purities ranging from 90% to 97.5%, depending on the adopted $f_{\rm cont}$ threshold. Halo mass estimates $M_{500}$, redshifts, richnesses, and optical centers are presented for all PSZ-MCMF clusters. The PSZ-MCMF catalogue adds 589 previously unknown Planck identified clusters over the DES footprint and provides redshifts for an additional 50 previously published Planck selected clusters with S/N&gt;4.5. Using the subsample with spectroscopic redshifts, we demonstrate excellent cluster photo-$z$ performance with an RMS scatter in $Δz/(1+z)$ of 0.47%. Our MCMF based analysis allows us to infer the contamination fraction of the initial S/N&gt;3 Planck selected candidate list, which is ~50%. We present a method of estimating the completeness of the PSZ-MCMF cluster sample. In comparison to the previously published Planck cluster catalogues. this new S/N&gt;3 MCMF confirmed cluster catalogue populates the lower mass regime at all redshifts and includes clusters up to z$\sim$1.3.
description: 20 pages, 5 Appendices, 17 figures. The newest submission matches the accepted MNRAS version