Publications (6)
Constraining the Scatter in the Mass-Richness Relation of maxBCG Clusters With Weak Lensing and X-ray Data
Eduardo Rozo, Eli S. Rykoff, August Evrard +10
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 meas…
Finding Fossil Groups: Optical Identification and X-ray Confirmation
Eric D. Miller, Eli Rykoff, Renato Dupke +6
We report the discovery of 12 new fossil groups of galaxies, systems dominated by a single giant elliptical galaxy and cluster-scale gravitational potential, but lacking the popula…
A Large X-ray Sample of Fossil Groups
Eric D. Miller, Eli Rykoff, Renato de Alencar Dupke +3
We present Chandra snapshot observations of the first large X-ray sample of optically identified fossil groups. For 9 of 14 candidate groups, we are able to determine the X-ray lum…
An Improved Cluster Richness Estimator
Eduardo Rozo, Eli S. Rykoff, Benjamin P. Koester +11
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 estimato…
An Untriggered Search for Optical Bursts
Robert Kehoe, Carl Akerlof, Richard Balsano +11
We present an untriggered search for optical bursts with the ROTSE-I telephoto array. Observations were taken which monitor an effective 256 square degree field continuously over 1…
The C4 Clustering Algorithm: Clusters of Galaxies in the Sloan Digital Sky Survey
Christopher J. Miller, Robert Nichol, Dan Reichart +15
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 Surve…