SIMBAD references

2009ApJS..183..197W - Astrophys. J., Suppl. Ser., 183, 197-213 (2009/August-0)

Galaxy clusters identified from the SDSS DR6 and their properties.

WEN Z.L., HAN J.L. and LIU F.S.

Abstract (from CDS):

Clusters of galaxies in most of the previous catalogs have redshifts z ≤ 0.3. Using the photometric redshifts of galaxies from the Sloan Digital Sky Survey Data Release 6 (SDSS DR6), we identify 39,716 clusters in the redshift range 0.05 < z < 0.6 with more than eight luminous (Mr≤ -21) member galaxies. Cluster redshifts are estimated accurately with an uncertainty of less than 0.022. The contamination rate of member galaxies is found to be roughly 20%, and the completeness of member galaxy detection reaches ∼90%. Monte Carlo simulations show that the cluster detection rate is more than 90% for massive (M200> 2x1014 M) clusters of z ≤ 0.42. The false detection rate is ∼5%. We obtain the richness, the summed luminosity, and the gross galaxy number within the determined radius for identified clusters. They are tightly related to the X-ray luminosity and temperature of clusters. Cluster mass is related to the richness and summed luminosity with M200 ∝ R 1.90±0.04 and M200∝ L 1.64±0.03r, respectively. In addition, 790 new candidates of X-ray clusters are found by cross-identification of our clusters with the source list of the ROSAT X-ray survey.

Abstract Copyright:

Journal keyword(s): galaxies: clusters: general - galaxies: distances and redshifts

VizieR on-line data: <Available at CDS (J/ApJS/183/197): table1.dat table2.dat>

Nomenclature: Table 1: [WHL2009] JHHMMSS.s+DDMMSS N=39716, [WHL2009] JHHMMSS.s+DDMMSS BCG N=39716.

Errata: erratum vol. 187, p.272 (2010)

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 4

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