Rozo, Eduardo, Rykoff, Eli S., Evrard, August, Becker, Matthew, McKay, Timothy, Wechsler, Risa H., ...
We measure the logarithmic scatter in mass at fixed richness for clusters in the maxBCG cluster catalog, an optically selected cluster sample drawn from SDSS imaging data. Our measurement is achieved...
An Improved Cluster Richness Estimator (2008)
Rozo, Eduardo, Rykoff, Eli S., Koester, Benjamin P., McKay, Timothy, Hao, Jiangang, Evrard, August, ...
Minimizing the scatter between cluster mass and accessible observables is an important goal for cluster cosmology. In this work, we introduce a new matched filter richness estimator, and test its...
The Dust Content of Galaxy Clusters (2007)
Chelouche, Doron, Koester, Benjamin P., Bowen, David V.
We report on the detection of reddening toward z ~ 0.2 galaxy clusters. This is measured by correlating the Sloan Digital Sky Survey cluster and quasar catalogs and by comparing the photometric and...
The Galaxy Content of SDSS Clusters and Groups (2007)
Hansen, Sarah M., Sheldon, Erin S., Wechsler, Risa H., Koester, Benjamin P.
Imaging data from the Sloan Digital Sky Survey are used to characterize the population of galaxies in groups and clusters detected with the MaxBCG algorithm. We investigate the dependence of...
Johnston, David E., Sheldon, Erin S., Wechsler, Risa H., Rozo, Eduardo, Koester, Benjamin P., Frieman, Joshua A., ...
We interpret and model the statistical weak lensing measurements around 130,000 groups and clusters of galaxies in the Sloan Digital Sky Survey presented by Sheldon et al. 2007 (Paper I). We present...
Cosmological Constraints from SDSS maxBCG Cluster Abundances (2007)
Rozo, Eduardo, Wechsler, Risa H., Koester, Benjamin P., McKay, Timothy A., Evrard, August E., Johnston, David, ...
We perform a maximum likelihood analysis of the cluster abundance measured in the SDSS using the maxBCG cluster finding algorithm. Our analysis is aimed at constraining the power spectrum...
Optically-Selected Cluster Catalogs as a Precision Cosmology Tool (2007)
Rozo, Eduardo, Wechsler, Risa H., Koester, Benjamin P., Evrard, August E., McKay, Timothy A.
We introduce a framework for describing the halo selection function of optical cluster finders. We treat the problem as being separable into a term that describes the intrinsic galaxy content of a...
MaxBCG: A Red Sequence Galaxy Cluster Finder (2007)
Koester, Benjamin P., McKay, Timothy A., Annis, James, Wechsler, Risa H., Evrard, August E., Rozo, Eduardo, ...
Measurements of galaxy cluster abundances, clustering properties, and mass to- light ratios in current and future surveys can provide important cosmological constraints. Digital wide-field imaging...