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Mass and galaxy distributions of four massive galaxy clusters from Dark Energy Survey Science Verification data

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Mass and galaxy distributions of four massive galaxy clusters from Dark Energy Survey Science Verification data

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Título Mass and galaxy distributions of four massive galaxy clusters from Dark Energy Survey Science Verification data
Autor Melchior, Peter M.
Suchyta, Eric
Huff, Eric
Hirsch, Michael Stefan
Kacprzak, Tomasz
Rykoff, Eli
Gruen, Daniel
Armstrong, Robert
Bacon, David J.
Bechtol, Keith
Bernstein, Gary M.
Bridle, Sarah Louise
Clampitt, Joseph
Honscheid, K.
Jain, Bhuvnesh
Jouvel, Stéphanie
Krause, Elisabeth
Lin, H.
MacCrann, Niall
Patton, Kenneth
Plazas Malagón, Andrés Alejandro
Rowe, Barnaby T. P.
Vikram, Vinu
Wilcox, Harry George
Young, Julia Cheek
Zuntz, J.
Abbott, Timothy M. C.
Abdalla, Filipe B.
Allam, Sahar S.
Banerji, M.
Bernstein, Joseph P.
Bernstein, Rebecca A.
Bertin, Emmanuel
Buckley-Geer, Elizabeth
Burke, David Lyle
Castander Serentill, Francisco Javier
Costa, Luiz N. da
Cunha, Carlos Eduardo
DePoy, Darren L.
Desai, S.
Diehl, H. Thomas
Doel, Peter
Estrada, Juan
Evrard, August E.
Fausti Neto, Angelo
Fernandez, Enrique
Finley, David A.
Flaugher, Brenna
Frieman, Joshua A.
Gaztañaga, Enrique
Gerdes, David W.
Gruendl, Robert A.
Gutierrez, Gaston R.
Jarvis, Michael
Karliner, Inga
Kent, Stephen M.
Kuehn, Kyler
Kuropatkin, Nikolay P.
Lahav, Ofer
Maia, Marcio Antonio Geimba
Makler, Martín
Marriner, John P.
Marshall, Jennifer L.
Merritt, K. Wyatt
Miller, Christopher J.
Miquel, Ramon
Mohr, Joseph J.
Neilsen, Eric H.
Nichol, Robert C.
Nord, Brian Dennis
Reil, Kevin
Roe, Natalie A.
Roodman, Aaron
Sako, Masao
Sanchez-Alvaro, Eusebio
Santiago, Basilio Xavier
Schindler, Rafe H.
Schubnell, Michael
Sevilla Noarbe, Ignacio
Sheldon, Erin
Smith, Robert Christopher
Soares-Santos, Marcelle
Swanson, Molly E. C.
Sypniewski, Adam J.
Tarle, Gregory
Thaler, Jon J.
Thomas, D.
Tucker, Douglas L.
Walker, Alistair
Wechsler, Risa H.
Weller, Jochen
Wester, William Carl
Abstract We measure the weak lensing masses and galaxy distributions of four massive galaxy clusters observed during the Science Verification phase of the Dark Energy Survey (DES). This pathfinder study is meant to (1) validate the Dark Energy Camera (DECam) imager for the task of measuring weak lensing shapes, and (2) utilize DECam’s large field of view to map out the clusters and their environments over 90 arcmin. We conduct a series of rigorous tests on astrometry, photometry, image quality, point spread function (PSF) modelling, and shear measurement accuracy to single out flaws in the data and also to identify the optimal data processing steps and parameters. We find Science Verification data from DECam to be suitable for the lensing analysis described in this paper. The PSF is generally well behaved, but the modelling is rendered difficult by a flux-dependent PSF width and ellipticity. We employ photometric redshifts to distinguish between foreground and background galaxies, and a red-sequence cluster finder to provide cluster richness estimates and cluster–galaxy distributions. By fitting Navarro–Frenk–White profiles to the clusters in this study, we determine weak lensing masses that are in agreement with previous work. For Abell 3261, we provide the first estimates of redshift, weak lensing mass, and richness. In addition, the cluster–galaxy distributions indicate the presence of filamentary structures attached to 1E 0657−56 and RXC J2248.7−4431, stretching out as far as 1◦(approximately 20 Mpc), showcasing the potential of DECam and DES for detailed studies of degree-scale features on the sky.
Contido em Monthly notices of the Royal Astronomical Society. Oxford. Vol. 449, no. 3 (May 2015), p. 2219-2238
Assunto Aglomerados de galaxias
[en] 4431
[en] 535827
[en] Cosmology: observations
[en] Galaxies: clusters: individual: 1E 0657−56
[en] Galaxies: clusters: individual: Abell 3261
[en] Galaxies: clusters: individual:RXCJ2248.7
[en] Galaxies: clusters: individual: SCSO J233227
[en] Gravitational lensing: weak
Origem Estrangeiro
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/126973
Arquivos Descrição Formato
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