The C4 clustering algorithm: clusters of galaxies in the Sloan Digital Sky Survey
dc.contributor.author | Miller, Christopher J. | en_US |
dc.contributor.author | Nichol, Robert C. | en_US |
dc.contributor.author | Reichart, D. | en_US |
dc.contributor.author | Wechsler, Risa H. | en_US |
dc.contributor.author | Evrard, August E. | en_US |
dc.contributor.author | Annis, James | en_US |
dc.contributor.author | McKay, Timothy A. | en_US |
dc.contributor.author | Bahcall, Neta A. | en_US |
dc.contributor.author | Bernardi, Mariangela | en_US |
dc.contributor.author | Boehringer, H. | en_US |
dc.contributor.author | Connolly, Andrew J. | en_US |
dc.contributor.author | Goto, T. | en_US |
dc.contributor.author | Kniazev, A. | en_US |
dc.contributor.author | Lamb, Donald Q. | en_US |
dc.contributor.author | Postman, M. | en_US |
dc.contributor.author | Schneider, Donald P. | en_US |
dc.contributor.author | Sheth, Ravi K. | en_US |
dc.contributor.author | Voges, W. | en_US |
dc.date.accessioned | 2008-08-14T19:12:38Z | |
dc.date.available | 2008-08-14T19:12:38Z | |
dc.date.issued | 2005-09 | en_US |
dc.identifier.citation | Miller, CJ; Nichol, RC; Reichart, D; Wechsler, RH; Evrard, AE; Annis, J; McKay, TA; Bahcall, NA; Bernardi, M; Boehringer, H; Connolly, AJ; Goto, T; Kniazev, A; Lamb, D; Postman, M; Schneider, DP; Sheth, RK; Voges, W. (2005). Astronomical Journal, 130:(3) 968-1001. <http://hdl.handle.net/2027.42/60618> | en_US |
dc.identifier.issn | 0004-6256 | en_US |
dc.identifier.uri | http://arxiv.org/abs/astro-ph/0503713 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/60618 | |
dc.description.abstract | We present the C4 Cluster Catalog, a new sample of 748 clusters of galaxies identified in the spectroscopic sample of the Second Data Release (DR2) of the Sloan Digital Sky Survey (SDSS). The C4 cluster-finding algorithm identifies clusters as overdensities in a seven-dimensional position and color space, thus minimizing projection effects that have plagued previous optical cluster selection. The present C4 catalog covers similar to 2600 deg(2) of sky and ranges in redshift from z = 0: 02 to 0.17. The mean cluster membership is 36 galaxies (with measured redshifts) brighter than r = 17: 7, but the catalog includes a range of systems, from groups containing 10 members to massive clusters with over 200 cluster members with measured redshifts. The catalog provides a large number of measured cluster properties including sky location, mean redshift, galaxy membership, summed r-band optical luminosity (L-r), and velocity dispersion, as well as quantitative measures of substructure and the surrounding large-scale environment. We use new, multicolor mock SDSS galaxy catalogs, empirically constructed from the Lambda CDM Hubble Volume (HV) Sky Survey output, to investigate the sensitivity of the C4 catalog to the various algorithm parameters ( detection threshold, choice of passbands, and search aperture), as well as to quantify the purity and completeness of the C4 cluster catalog. These mock catalogs indicate that the C4 catalog is similar or equal to 90% complete and 95% pure above M-200 = 1 x 10(14) h(-1) M circle dot and within 0.03 <= z <= 0.12. Using the SDSS DR2 data, we show that the C4 algorithm finds 98% of X-ray-identified clusters and 90% of Abell clusters within 0.03 <= z <= 0.12. Using the mock galaxy catalogs and the full HV dark matter simulations, we show that the L-r of a cluster is a more robust estimator of the halo mass ( M200) than the galaxy line-of-sight velocity dispersion or the richness of the cluster. However, if we exclude clusters embedded in complex large-scale environments, we find that the velocity dispersion of the remaining clusters is as good an estimator of M-200 as Lr. The final C4 catalog will contain similar or equal to 2500 clusters using the full SDSS data set and will represent one of the largest and most homogeneous samples of local clusters. | en_US |
dc.format.extent | 2074674 bytes | |
dc.format.extent | 18 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.publisher | Univ Chicago Press | en_US |
dc.subject | Catalogs | en_US |
dc.subject | Galaxies : Clusters : General | en_US |
dc.title | The C4 clustering algorithm: clusters of galaxies in the Sloan Digital Sky Survey | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Physics | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA | en_US |
dc.contributor.affiliationum | Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA | en_US |
dc.contributor.affiliationother | Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA | en_US |
dc.contributor.affiliationother | Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 2EG, Hants, England | en_US |
dc.contributor.affiliationother | Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA | en_US |
dc.contributor.affiliationother | Univ Chicago, Ctr Cosmol Phys, Dept Astron & Astrophys, Chicago, IL 60637 USA | en_US |
dc.contributor.affiliationother | Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA | en_US |
dc.contributor.affiliationother | Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA | en_US |
dc.contributor.affiliationother | Princeton Univ Observ, Princeton, NJ 08544 USA | en_US |
dc.contributor.affiliationother | Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA | en_US |
dc.contributor.affiliationother | Max Planck Inst Extraterr Phys, D-85748 Garching, Germany | en_US |
dc.contributor.affiliationother | Univ Tokyo, Inst Cosm Ray Res, Kashiwa, Chiba 2770882, Japan | en_US |
dc.contributor.affiliationother | Special Astrophys Observ, Nizhnii Arkhyz 369167, Karachai Circas, Russia | en_US |
dc.contributor.affiliationother | Max Planck Inst Astrophys, D-69117 Heidelberg, Germany | en_US |
dc.contributor.affiliationother | Isaac Newton Inst Chile, SAO Branch, Santiago, Chile | en_US |
dc.contributor.affiliationother | Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA | en_US |
dc.contributor.affiliationother | Space Telescope Sci Inst, Baltimore, MD 21218 USA | en_US |
dc.contributor.affiliationother | Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA | en_US |
dc.contributor.affiliationumcampus | Ann Arbor | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/60618/1/Miller2005C4Clustering.pdf | |
dc.identifier.doi | http://dx.doi.org/10.1086/431357 | en_US |
dc.owningcollname | Astrophysics (Physics, Department of) |
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