mu(*) masses: weak-lensing calibration of the Dark Energy Survey Year 1 redMaPPer clusters using stellar masses

Pereira, M. E. S.; Palmese, A.; Varga, T. N.; McClintock, T.; Soares-Santos, M.; Burgad, J.; Annis, J.; Farahi, A.; Lin, H.; Choi, A.; DeRose, J.; Esteves, J.; Gatti, M.; Gruen, D.; Hartley, W. G.; Hoyle, B.; Jeltema, T.; MacCrann, N.; Roodman, A.; Sanchez, C.; Shin, T.; Linden, A. von der; Zuntz, J.; Abbott, T. M. C.; Aguena, M.; Avila, S.; Bertin, E.; Bhargava, S.; Bridle, S. L.; Brooks, D.; Burke, D. L.; Rosell, A. Carnero; Kind, M. Carrasco; Carretero, J.; Costanzi, M.; Da Costa, L. N.; Desai, S.; Diehl, H. T.; Dietrich, J. P.; Doel, P.; Estrada, J.; Everett, S.; Flaugher, B.; Fosalba, P.; Frieman, J.; Garcia-Bellido, J.; Gaztanaga, E.; Gerdes, D. W.; Gruendl, R. A.; Gschwend, J.; Gutierrez, G.; Hinton, S. R.; Hollowood, D. L.; Honscheid, K.; James, D. J.; Kuehn, K.; Kuropatkin, N.; Lahav, O.; Lima, M.; Maia, M. A. G.; March, M.; Marshall, J. L.; Melchior, P.; Menanteau, F.; Miquel, R.; Ogando, R. L. C.; Paz-Chinchon, F.; Plazas, A. A.; Romer, A. K.; Sanchez, E.; Scarpine, V.; Schubnell, M.; Serrano, S.; Sevilla-Noarbe, I; Smith, M.; Suchyta, E.; Swanson, M. E. C.; Tarle, G.; Wechsler, R. H.; Weller, J. und Zhang, Y. (2020): mu(*) masses: weak-lensing calibration of the Dark Energy Survey Year 1 redMaPPer clusters using stellar masses. In: Monthly Notices of the Royal Astronomical Society, Bd. 498, Nr. 4: S. 5450-5467

Abstract

We present the weak-lensing mass calibration of the stellar-mass-based mu(*) mass proxy for redMaPPer galaxy clusters in the Dark Energy SurveyYear 1. For the first time, we are able to perform a calibration of mu(*) at high redshifts, z> 0.33. In a blinded analysis, we use similar to 6000 clusters split into 12 subsets spanning the ranges 0.1 <= z< 0.65 and mu(*) up to similar to 5.5 x 10(13) M-circle dot, and infer the average masses of these subsets through modelling of their stacked weak-lensing signal. In our model, we account for the following sources of systematic uncertainty: shear measurement and photometric redshift errors, miscentring, cluster-member contamination of the source sample, deviations from the Navarro-Frenk-White halo profile, halo triaxiality, and projection effects. We use the inferred masses to estimate the joint mass-mu(*)-z scaling relation given by < M-200c vertical bar mu(*), z > = M0(mu(*)/5.16 x 10(12)M(circle dot))F-mu* ((1 + z)/1.35)(Gz). We find M-0 = (1.14 +/- 0.07) x 10(14)M(circle dot) with F mu(*) = 0.76 +/- 0.06 and G(z) = -1.14 +/- 0.37. We discuss the use of mu(*) as a complementary mass proxy to the well-studied richness. for: (i) exploring the regimes of low z, lambda < 20 and high lambda, z similar to 1;and (ii) testing systematics such as projection effects for applications in cluster cosmology.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Physik
• Themengebiete: 500 Naturwissenschaften und Mathematik > 530 Physik
• ISSN: 0035-8711
• Sprache: Englisch