학술논문
Stellar mass as a galaxy cluster mass proxy: application to the Dark Energy Survey redMaPPer clusters
Document Type
Working Paper
Author
Palmese, A.; Annis, J.; Burgad, J.; Farahi, A.; Soares-Santos, M.; Welch, B.; Pereira, M. da Silva; Lin, H.; Bhargava, S.; Hollowood, D. L.; Wilkinson, R.; Giles, P.; Jeltema, T.; Romer, A. K.; Evrard, A. E.; Hilton, M.; Cervantes, C. Vergara; Bermeo, A.; Mayers, J.; DeRose, J.; Gruen, D.; Hartley, W. G.; Lahav, O.; Leistedt, B.; McClintock, T.; Rozo, E.; Rykoff, E. S.; Varga, T. N.; Wechsler, R. H.; Zhang, Y.; Avila, S.; Brooks, D.; Buckley-Geer, E.; Burke, D. L.; Rosell, A. Carnero; Kind, M. Carrasco; Carretero, J.; Castander, F. J.; Collins, C.; da Costa, L. N.; Desai, S.; De Vicente, J.; Diehl, H. T.; Dietrich, J. P.; Doel, P.; Flaugher, B.; Fosalba, P.; Frieman, J.; Garcia-Bellido, J.; Gerdes, D. W.; Gruendl, R. A.; Gschwend, J.; Gutierrez, G.; Honscheid, K.; James, D. J.; Krause, E.; Kuehn, K.; Kuropatkin, N.; Liddle, A.; Lima, M.; Maia, M. A. G.; Mann, R. G.; Marshall, J. L.; Menanteau, F.; Miquel, R.; Ogando, R. L. C.; Plazas, A. A.; Roodman, A.; Rooney, P.; Sahlen, M.; Sanchez, E.; Scarpine, V.; Schubnell, M.; Serrano, S.; Sevilla-Noarbe, I.; Sobreira, F.; Stott, J.; Suchyta, E.; Swanson, M. E. C.; Tarle, G.; Thomas, D.; Tucker, D. L.; Viana, P. T. P.; Vikram, V.; Walker, A. R.
Source
Subject
Language
Abstract
We introduce a galaxy cluster mass observable, $\mu_\star$, based on the stellar masses of cluster members, and we present results for the Dark Energy Survey (DES) Year 1 observations. Stellar masses are computed using a Bayesian Model Averaging method, and are validated for DES data using simulations and COSMOS data. We show that $\mu_\star$ works as a promising mass proxy by comparing our predictions to X-ray measurements. We measure the X-ray temperature-$\mu_\star$ relation for a total of 150 clusters matched between the wide-field DES Year 1 redMaPPer catalogue, and Chandra and XMM archival observations, spanning the redshift range $0.1