6 papers
Virial masses and the baryon fraction in galaxies
H. Hoekstra, B. C. Hsieh, H. K. C. Yee +2
We have measured the weak lensing signal as a function of restframe luminosity for a sample of `isolated' galaxies. These results are based on four-band photometry from the Red-Seq…
Catalog of Galaxy Morphology in Four Rich Clusters: Luminosity Evolution of Disk Galaxies at 0.33<z<0.83
Amelie Saintonge, David Schade, Erica Ellingson +2
Hubble Space Telescope (HST) imaging of four rich, X-ray luminous, galaxy clusters (0.33<z<0.83) is used to produce quantitative morphological measurements for galaxies in their fi…
RCS043938-2904.9: A New Rich Cluster of Galaxies at z=0.951
L. Felipe Barrientos, Michael D. Gladders, H. K. C. Yee +4
We present deep I, J_s, K_s imaging and optical spectroscopy of the newly discovered Red-Sequence Cluster Survey cluster RCS043938-2904.9. This cluster, drawn from an extensive pre…
The Incidence of Strong-Lensing Clusters in the Red-Sequence Cluster Survey
Michael D. Gladders, Henk Hoekstra, H. K. C. Yee +2
The incidence of giant arcs due to strong-lensing clusters of galaxies is known to be discrepant with current theoretical expectations. This result derives from a comparison of sev…
Lensing by galaxies in CNOC2 fields
H. Hoekstra, M. Franx, K. Kuijken +2
We have observed two blank fields of approximately 30 by 23 arcminutes using the William Herschel Telescope. The fields have been studied as part of the CNOC2 survey, and spectrosc…
Correlations of Richness and Global Properties in Galaxy Clusters
H. K. C. Yee, E. Ellingson
We measure the optical richness of galaxy clusters from the CNOC1 cluster redshift survey using the galaxy-cluster center correlation amplitude B_gc. We show that the B_gc values m…