A Parameterized Galaxy Catalog Simulator for Testing Cluster Finding, Mass Estimation, and Photometric Redshift Estimation in Optical and Near-infrared Surveys
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In this article, the authors present a galaxy catalog simulator that converts N-body simulations with halo and sub-halo catalogs into mock, multiband photometric catalogs.Abstract:
We present a galaxy catalog simulator that converts N-body simulations with halo and subhalo catalogs into mock, multiband photometric catalogs The simulator assigns galaxy properties to each subhalo in a way that reproduces the observed cluster galaxy halo occupation distribution, the radial and mass-dependent variation in fractions of blue galaxies, the luminosity functions in the cluster and the field, and the color–magnitude relation in clusters Moreover, the evolution of these parameters is tuned to match existing observational constraints Parameterizing an ensemble of cluster galaxy properties enables us to create mock catalogs with variations in those properties, which in turn allows us to quantify the sensitivity of cluster finding to current observational uncertainties in these properties Field galaxies are sampled from existing multiband photometric surveys of similar depth We present an application of the catalog simulator to characterize the selection function and contamination of a galaxy cluster finder that utilizes the cluster red sequence together with galaxy clustering on the sky We estimate systematic uncertainties in the selection to be at the 15% level with current observational constraints on cluster galaxy populations and their evolution We find the contamination in this cluster finder to be ∼35% to redshift z ∼ 06 In addition, we use the mock galaxy catalogs to test the optical mass indicator Bgc and a red-sequence redshift estimator We measure the intrinsic scatter of the Bgc–mass relation to be approximately log normal with σlog10 M ∼ 025 and we demonstrate photometric redshift accuracies for massive clusters at the ∼3% level out to z ∼ 07read more
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Journal ArticleDOI
redMaPPer I: Algorithm and SDSS DR8 Catalog
Eli S. Rykoff,Eduardo Rozo,Michael T. Busha,Michael T. Busha,Carlos E. Cunha,Alexis Finoguenov,August E. Evrard,Jiangang Hao,Benjamin P. Koester,Alexie Leauthaud,Brian Nord,Marguerite Pierre,Rachel M. Reddick,Rachel M. Reddick,T. Sadibekova,Erin S. Sheldon,Risa H. Wechsler,Risa H. Wechsler +17 more
TL;DR: RedMaPPer as discussed by the authors is a new red sequence cluster finder designed to make optimal use of ongoing and near-future large photometric surveys, which can iteratively self-train the red sequence model based on a minimal spectroscopic training sample.
Journal ArticleDOI
The Evolution of Early-Type Galaxies in Distant Clusters
TL;DR: In this article, an optical-IR photometric study of early-type galaxies in 19 galaxy clusters out to z = 0.9 was performed, showing that the color evolution of the early type galaxies becomes bluer with increasing redshift, consistent with the passive evolution of an old stellar population formed at an early cosmic epoch.
Journal ArticleDOI
Galaxy clusters discovered via the sunyaev-zel’dovich effect in the first 720 square degrees of the south pole telescope survey
Christian L. Reichardt,B. Stalder,Lindsey Bleem,T. E. Montroy,K. A. Aird,K. Andersson,K. Andersson,Robert Armstrong,M. L. N. Ashby,Mark W. Bautz,Matthew B. Bayliss,G. Bazin,Bradford Benson,Mark Brodwin,John E. Carlstrom,John E. Carlstrom,C. L. Chang,C. L. Chang,Hsiao-Mei Cho,Alejandro Clocchiatti,T. M. Crawford,A. T. Crites,T. de Haan,Shantanu Desai,Matt Dobbs,J. P. Dudley,R. J. Foley,William R. Forman,Elizabeth George,Michael D. Gladders,Anthony H. Gonzalez,N. W. Halverson,N. L. Harrington,F. W. High,Gilbert Holder,W. L. Holzapfel,S. Hoover,J. D. Hrubes,Christine Jones,Marshall Joy,Ryan Keisler,Lloyd Knox,Adrian T. Lee,Adrian T. Lee,E. M. Leitch,Jiayi Liu,M. Lueker,M. Lueker,Daniel M. Luong-Van,Adam Mantz,Daniel P. Marrone,Michael McDonald,Jeff McMahon,Jeff McMahon,J. Mehl,S. S. Meyer,L. M. Mocanu,Joseph J. Mohr,S. S. Murray,T. Natoli,Stephen Padin,Stephen Padin,T. Plagge,C. Pryke,Armin Rest,Jonathan Ruel,J. E. Ruhl,Benjamin Saliwanchik,A. Saro,J. T. Sayre,K. K. Schaffer,K. K. Schaffer,L. Shaw,L. Shaw,Erik Shirokoff,Erik Shirokoff,Jizhou Song,Helmuth Spieler,Z. K. Staniszewski,Antony A. Stark,K. T. Story,Christopher W. Stubbs,R. Šuhada,A. van Engelen,K. Vanderlinde,Joaquin Vieira,Joaquin Vieira,Alexey Vikhlinin,R. Williamson,Oliver Zahn,A. Zenteno +90 more
TL;DR: In this article, the authors presented a catalog of galaxy cluster candidates, selected through their Sunyaev-Zel'dovich (SZ) effect signature in the first 720 deg^2 of the South Pole Telescope (SPT) survey.
Journal ArticleDOI
Lightcone mock catalogues from semi-analytic models of galaxy formation – I. Construction and application to the BzK colour selection
Alex Merson,Alex Merson,Carlton M. Baugh,John C. Helly,Violeta Gonzalez-Perez,Shaun Cole,R. M. Bielby,Peder Norberg,Carlos S. Frenk,Andrew J. Benson,Richard G. Bower,Cedric G. Lacey,Claudia del P. Lagos +12 more
TL;DR: In this article, a method for constructing end-to-end mock galaxy catalogues using a semi-analytical model of galaxy formation, applied to the halo merger trees extracted from a cosmological N-body simulation, is presented.
Journal ArticleDOI
redMaPPer II: X-ray and SZ Performance Benchmarks for the SDSS Catalog
Eduardo Rozo,Eli S. Rykoff +1 more
TL;DR: The redMaPPer photometric redshifts are nearly unbiased (3.5 keV, and L_X > 2\times 10^{44} erg/s, decreasing to 90% completeness at L X ~ 10^{43} erg /s.
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TL;DR: A series of improvements to the spectroscopic reductions are described, including better flat fielding and improved wavelength calibration at the blue end, better processing of objects with extremely strong narrow emission lines, and an improved determination of stellar metallicities.
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