GALAXY CLUSTERS IDENTIFIED FROM THE SDSS DR6 AND THEIR PROPERTIES

By Z. Wen, Jin Han, F. Liu. 2009

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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 > 2 × 1014 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 ∝ R1.90±0.04 and M200 ∝ L1.64±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.

View Paper: https://www.semanticscholar.org/paper/a83039476378439f54f999d31a232c815cfd0c4a

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Citations in the corpus

A GMBCG GALAXY CLUSTER CATALOG OF 55,424 RICH CLUSTERS FROM SDSS DR7 (2010, methodology): “In addition to maxBCG clusters, we also match the GMBCG clusters with clusters from the catalog by Wen et al. (2009) (WHL catalog hereafter), which is built based on SDSS DR6 and ranges from 0.05 to 0.6 in redshift.”
The Atacama Cosmology Telescope: Sunyaev-Zel'dovich selected galaxy clusters at 148 GHz from three seasons of data (2013, methodology): “…Abell 1958; Lumsden et al. 1992; Goto et al. 2002; Lopes et al. 2004; Miller et al. 2005; Koester et al. 2007; Hao et al. 2010; Szabo et al. 2011; Wen et al. 2009, 2012) and X-ray (e.g., Henry et al. 1992; Böhringer et al. 2004; Burenin et al. 2007; Mehrtens et al. 2012) surveys to search for…”
A CATALOG OF 132,684 CLUSTERS OF GALAXIES IDENTIFIED FROM SLOAN DIGITAL SKY SURVEY III (2012, methodology): “We have shown in our previous work that the measurements of the total luminosity or richness are robust for adopting different widths of the photo-z gap (Wen et al. 2009).”
Observational probes of cosmic acceleration (2012, background): “0.5) and wide catalogs, which can contain upwards of 50,000 clusters (e.g. Koester et al., 2007; Wen et al., 2009; Hao et al., 2010; Szabo et al., 2011).”