Chandra Observations of z 1 Clusters from the Red Sequence Cluster Survey
Abstract
Observational studies of cluster evolution over moderate redshift ranges are a powerful tool for constraining cosmological parameters, yet full knowledge of the properties of these clusters remains elusive. By virtue of a highly efficient optical selection technique, the Red Sequence Cluster Survey (RCS) has detected a large sample of high redshift cluster candidates. All six of the clusters from this sample which have recently been observed with the Chandra X-Ray Observatory were detected in the X-ray. These follow-up observations (0.64 < z < 1.0) indicate that these clusters are systematically less luminous than their similarly rich, X-ray selected counterparts. Comparisons with X-ray selected samples suggest that this discrepancy may be due in part to differences in the spatial structure of the clusters. Our initial results from Chandra follow-up observations of six RCS clusters will be presented, including some preliminary spectral information.
- Publication:
-
American Astronomical Society Meeting Abstracts #204
- Pub Date:
- May 2004
- Bibcode:
- 2004AAS...204.9105H