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Near-Infrared Properties of Moderate-Redshift Galaxy Clusters: Luminosity Functions and Density Profiles
Adam Muzzin, H. K. C. Yee, Patrick B. Hall +2
We present K-band imaging for 15 of the Canadian Network for Observational Cosmology (CNOC1) clusters. The cluster luminosity density and number density profiles can be described b…
The Low-Redshift Lyman Alpha Forest toward PKS 0405-123
G. M. Williger, S. R. Heap, R. J. Weymann +5
We present STIS 7km/s resolution data of the Ly-a forest toward PKS0405-123 (z=0.574). We make two samples. The strong sample (60 systems) has column density logNHI>13.3 over 0.002…
New X-ray Clusters in the EMSS II: Optical Properties
Aaron D. Lewis, E. Ellingson, John T. Stocke
We present optical images for 9 new clusters of galaxies we have found in a reanalysis of the Einstein IPC images comprising the Extended Medium Sensitivity Survey (EMSS). Based on…
New X-ray Clusters in the EMSS I: Modifications to the XLF
Aaron D. Lewis, John T. Stocke, E. Ellingson +1
The complete ensemble of Einstein Imaging Proportional Counter (IPC) X-ray images has been re-processed and re-analyzed using a multi-aperture source detection algorithm. A catalog…
The Evolution of Population Gradients in Galaxy Clusters: the Butcher-Oemler Effect and Cluster Infall
E. Ellingson, H. Lin, H. K. C. Yee +1
We present photometric and spectroscopic measurements of the galaxy populations in clusters from the CNOC1 sample of rich, X-ray luminous clusters at . A classical…
The X-ray Size-Temperature Relation for Intermediate Redshift Galaxy Clusters
Joseph J. Mohr, Erik D. Reese, E. Ellingson +2
We present the first measurements of the X-ray size-temperature (ST) relation in intermediate redshift (z~0.30) galaxy clusters. We interpret the local ST relation (z~0.06) in term…
The velocity and mass distribution of clusters of galaxies from the CNOC1 cluster redshift survey
R. P. van der Marel, J. Magorrian, R. G. Carlberg +2
In the context of the CNOC1 cluster survey, redshifts were obtained for galaxies in 16 clusters. The resulting sample is ideally suited for an analysis of the internal velocity and…
The Dependence of Cluster Galaxy Star Formation Rates on the Global Environment
Mike L. Balogh, David Schade, Simon L. Morris +3
A comparison of star formation properties as a function of environment is made from the spectra of identically selected cluster and field galaxies in the CNOC 1 redshift survey of…
Star Formation in Cluster Galaxies at 0.2<z<0.55
Mike. L. Balogh, Simon L. Morris, H. K. C. Yee +2
The rest frame equivalent width of the [OII]3727 emission line, W(OII), has been measured for cluster and field galaxies in the CNOC redshift survey of rich clusters at 0.2<z<0.55.…
The CNOC Cluster Survey: Omega, sigma_8, Phi(L,z) Results, and Prospects for Lambda Measurement
R. G. Carlberg, H. K. C. Yee, H. Lin +14
Rich galaxy clusters are powerful probes of both cosmological and galaxy evolution parameters. The CNOC cluster survey was primarily designed to distinguish between Omega=1 and Ome…
The Average Mass Profile of Galaxy Clusters
R. G. Carlberg, H. K. C. Yee, E. Ellingson +9
The average mass density profile measured in the CNOC cluster survey is well described with the analytic form rho(r)=A/[r(r+a_rho)^2], as advocated on the basis on n-body simulatio…
Redshift Evolution of Galaxy Cluster Densities
R. G. Carlberg, S. L. Morris, H. K. C. Yee +1
The number of rich galaxy clusters per unit volume is a strong function of Omega, the cosmological density parameter, and sigma_8, the linear extrapolation to z=0 of the density co…
Close Pairs of Field Galaxies in the CNOC1 Redshift Survey
D. R. Patton, C. J. Pritchet, H. K. C. Yee +2
A redshift sample of 545 field galaxies is used to examine how the galaxy merger rate changes with redshift, and how mergers affect the observed properties of galaxies in close pai…
The Luminosity Function of Field Galaxies in the CNOC1 Redshift Survey
H. Lin, H. K. C. Yee, R. G. Carlberg +1
We have computed the luminosity function for 389 field galaxies from the Canadian Network for Observational Cosmology cluster redshift survey (CNOC1), over redshifts z = 0.2-0.6. W…
Optical-IR Spectral Energy Distribution of the Proto-Galaxy Candidate MS1512-cB58
E. Ellingson, H. K. C. Yee, J. Bechtold +1
The spectral energy distribution of the proto-galaxy candidate MS1512-cB58 at discovered by Yee et al. (1996) is presented. Photometry in seven bands ranging from to…
Galaxy Evolution in Abell 2390
R. G. Abraham, T. A. Smecker-Hane, J. B. Hutchings +6
The galaxy population in the intermediate-redshift () rich cluster Abell 2390 is investigated. We present velocities, colors, and morphological information for an exceptio…
Evolution of galactic disks in clusters and the field at in the CNOC survey
D. Schade, R. G. Carlberg, H. K. C. Yee +2
Two-dimensional surface photometry is presented for a sample of 351 late-type galaxies with . These objects are drawn from the Canadian Network for Observational C…
The Average Mass-to-Light Profile of Galaxy Clusters
R. G. Carlberg, H. K. C. Yee, E. Ellingson
The systematic errors in the virial mass-to-light ratio, M_v/L, of galaxy clusters as an estimator of the field M/L value are assessed. We overlay 14 clusters in redshift space to…
Lensing from the Light-Traces-Mass Map of MS1224+20
R. G. Carlberg, H. K. C. Yee, E. Ellingson
The MS1224+20 cluster of galaxies is a high luminosity X-ray source at z=0.325. To compare the lensing mass to the virial mass we have completed a uniform, high precision redshift…