A new RASS galaxy cluster catalogue with low contamination extending to z ∼ 1 in the DES overlap region

ABSTRACT We present the MARD-Y3 catalogue of between 1086 and 2171 galaxy clusters (52 per cent and 65 per cent new) produced using multicomponent matched filter (MCMF) follow-up in 5000 deg2 of DES-Y3 optical data of the ∼20 000 overlapping ROSAT All-Sky Survey source catalogue (2RXS) X-ray sources...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Mon.Not.Roy.Astron.Soc 2019-09, Vol.488 (1), p.739-769
Hauptverfasser: Klein, M, Grandis, S, Mohr, J J, Paulus, M, Abbott, T M C, Annis, J, Avila, S, Bertin, E, Brooks, D, Buckley-Geer, E, Rosell, A Carnero, Kind, M Carrasco, Carretero, J, Castander, F J, Cunha, C E, D’Andrea, C B, da Costa, L N, De Vicente, J, Desai, S, Diehl, H T, Dietrich, J P, Doel, P, Evrard, A E, Flaugher, B, Fosalba, P, Frieman, J, García-Bellido, J, Gaztanaga, E, Giles, P A, Gruen, D, Gruendl, R A, Gschwend, J, Gutierrez, G, Hartley, W G, Hollowood, D L, Honscheid, K, Hoyle, B, James, D J, Jeltema, T, Kuehn, K, Kuropatkin, N, Lima, M, Maia, M A G, March, M, Marshall, J L, Menanteau, F, Miquel, R, Ogando, R L C, Plazas, A A, Romer, A K, Roodman, A, Sanchez, E, Scarpine, V, Schindler, R, Serrano, S, Sevilla-Noarbe, I, Smith, M, Smith, R C, Soares-Santos, M, Sobreira, F, Suchyta, E, Swanson, M E C, Tarle, G, Thomas, D, Vikram, V
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:ABSTRACT We present the MARD-Y3 catalogue of between 1086 and 2171 galaxy clusters (52 per cent and 65 per cent new) produced using multicomponent matched filter (MCMF) follow-up in 5000 deg2 of DES-Y3 optical data of the ∼20 000 overlapping ROSAT All-Sky Survey source catalogue (2RXS) X-ray sources. Optical counterparts are identified as peaks in galaxy richness as a function of redshift along the line of sight towards each 2RXS source within a search region informed by an X-ray prior. All peaks are assigned a probability fcont of being a random superposition. The clusters lie at 0.02 < z < 1.1 with more than 100 clusters at z > 0.5. Residual contamination is 2.6 per cent and 9.6 per cent for the cuts adopted here. For each cluster we present the optical centre, redshift, rest frame X-ray luminosity, M500 mass, coincidence with NWAY infrared sources, and estimators of dynamical state. About 2 per cent of MARD-Y3 clusters have multiple possible counterparts, the photo-z’s are high quality with σΔz/(1 + z) = 0.0046, and ∼1 per cent of clusters exhibit evidence of X-ray luminosity boosting from emission by cluster active galactic nuclei. Comparison with other catalogues (MCXC, RM, SPT-SZ, Planck) is performed to test consistency of richness, luminosity, and mass estimates. We measure the MARD-Y3 X-ray luminosity function and compare it to the expectation from a fiducial cosmology and externally calibrated luminosity- and richness–mass relations. Agreement is good, providing evidence that MARD-Y3 has low contamination and can be understood as a simple two step selection – X-ray and then optical – of an underlying cluster population described by the halo mass function.
ISSN:0035-8711
1365-2966
DOI:10.1093/mnras/stz1463