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The redmapper galaxy cluster catalog from DES Science Verification data

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posted on 2023-06-09, 01:52 authored by E S Rykoff, E Rozo, D Hollowood, A Bermeo-Hernandez, T Jeltema, Julian Mayers, Kathy RomerKathy Romer, Philip Rooney, A Saro, C Vergara Cervantes, R H Wechsler, H Wilcox, T M C Abbott, F B Abdalla, S Allam, J Annis, A Benoit-Lévy, G M Bernstein, E Bertin, D Brooks, D L Burke, D Capozzi, A Carnero Rosell, M Carrasco Kind, F J Castander, M Childress, C A Collins, C E Cunha, C B D’Andrea, L N da Costa, T M Davis, S Desai, H T Diehl, J P Dietrich, P Doel, A E Evrard, D A Finley, B Flaugher, P Fosalba, J Frieman, K Glazebrook, D A Goldstein, D Gruen, R A Gruendl, G Gutierrez, M Hilton, K Honscheid, B Hoyle, D J James, S T Kay, K Kuehn, N Kuropatkin, O Lahav, G F Lewis, C Lidman, M Lima, M A G Maia, R G Mann, J L Marshall, P Martini, P Melchior, C J Miller, R Miquel, J J Mohr, R C Nichol, B Nord, R Ogando, A A Plazas, K Reil, M Sahlén, E Sanchez Garcia, B Santiago, V Scarpine, M Schubnell, I Sevilla-Noarbe, R C Smith, M Soares-Santos, F Sobreira, J P Stott, E Suchyta, M E C Swanson, G Tarle, D Thomas, D Tucker, S Uddin, P T P Viana, V Vikram, A R Walker, Y Zhang
We describe updates to the redMaPPer algorithm, a photometric red-sequence cluster finder specifically designed for large photometric surveys. The updated algorithm is applied to 150 {{deg}}2 of Science Verification (SV) data from the Dark Energy Survey (DES), and to the Sloan Digital Sky Survey (SDSS) DR8 photometric data set. The DES SV catalog is locally volume limited and contains 786 clusters with richness lambda \gt 20 (roughly equivalent to {M}{{500c}}? {10}14 {h}70-1 {M}o ) and 0.2\lt z\lt 0.9. The DR8 catalog consists of 26,311 clusters with 0.08\lt z\lt 0.6, with a sharply increasing richness threshold as a function of redshift for z? 0.35. The photometric redshift performance of both catalogs is shown to be excellent, with photometric redshift uncertainties controlled at the {sigma }z/(1+z)~ 0.01 level for z? 0.7, rising to ~0.02 at z~ 0.9 in DES SV. We make use of Chandra and XMM X-ray and South Pole Telescope Sunyaev--Zeldovich data to show that the centering performance and mass--richness scatter are consistent with expectations based on prior runs of redMaPPer on SDSS data. We also show how the redMaPPer photo-z and richness estimates are relatively insensitive to imperfect star/galaxy separation and small-scale star masks.

Funding

2012 Doctoral Training Grant - Quota Studentships (STFC); G0939; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/K502364/1

Astrophysics and Cosmology - Sussex Consolidated Grant; G1291; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/L000652/1

History

Publication status

  • Published

File Version

  • Published version

Journal

The Astrophysical Journal Supplement Series

ISSN

1538-4365

Publisher

American Astronomical Society

Issue

1

Volume

224

Page range

1

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2016-06-23

First Open Access (FOA) Date

2016-06-23

First Compliant Deposit (FCD) Date

2016-06-23

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