A Merged Catalog of Clusters of Galaxies from Early SDSS Data

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dc.creatorBahcall, Neta A.
dc.creatorMcKay, Timothy A.
dc.creatorAnnis, James
dc.creatorKim, Rita
dc.creatorDong, Feng
dc.creatorHansen, Sarah
dc.creatorGoto, Tomotsugu
dc.creatorGunn, James E.
dc.creatorMiller, Chris
dc.creatorNichol, Robert C.
dc.creatorPostman, Marc
dc.creatorSchneider, Don
dc.creatorSchroeder, Josh
dc.creatorVoges, Wolfgang
dc.creatorBrinkmann, Jon
dc.creatorFukugita, Masataka
dc.date2003-05-12
dc.date.accessioned2026-07-07T10:26:56Z
dc.date.available2026-07-07T10:26:56Z
dc.descriptionWe present a catalog of 799 clusters of galaxies in the redshift range z_est = 0.05 - 0.3 selected from ~400 deg^2 of early SDSS commissioning data along the celestial equator. The catalog is based on merging two independent selection methods -- a color-magnitude red-sequence maxBCG technique (B), and a Hybrid Matched-Filter method (H). The BH catalog includes clusters with richness Λ>= 40 (Matched-Filter) and N_gal >= 13 (maxBCG), corresponding to typical velocity dispersion of σ_v >~ 400 km s^{-1} and mass (within 0.6 h^{-1) Mpc radius) >~ 5*10^{13} h^{-1} M_sun. This threshold is below Abell richness class 0 clusters. The average space density of these clusters is 2*10^{-5} h^3 Mpc^{-3}. All NORAS X-ray clusters and 53 of the 58 Abell clusters in the survey region are detected in the catalog; the 5 additional Abell clusters are detected below the BH catalog cuts. The cluster richness function is determined and found to exhibit a steeply decreasing cluster abundance with increasing richness. We derive observational scaling relations between cluster richness and observed cluster luminosity and cluster velocity dispersion; these scaling relations provide important physical calibrations for the clusters. The catalog can be used for studies of individual clusters, for comparisons with other sources such as X-ray clusters and AGNs, and, with proper correction for the relevant selection functions, also for statistical analyses of clusters.
dc.descriptionAASTeX, 62 pages, including 14 figures and 4 tables, submitted to ApJS. Paper with full-resolution figures at http://astro.princeton.edu/~feng/sdss_cluster.ps
dc.identifierhttps://arxiv.org/abs/astro-ph/0305202
dc.identifierhttp://arxiv.org/abs/astro-ph/0305202
dc.identifierAstrophys.J.Suppl.Ser.148:243-274,2003
dc.identifierdoi:10.1086/377167
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/177013
dc.subjectAstrophysics
dc.titleA Merged Catalog of Clusters of Galaxies from Early SDSS Data
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