A Giant Arc in a ROSAT Detected Cluster of Galaxies
classification
🌌 astro-ph
keywords
clustergiantrosatclustersdetectedsurveyabelladvantage
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We report the serendipitous discovery of a giant grvitational arc in the Abell Supplementary cluster S295 during optical follow-up observations of clusters detected in the ROSAT All-Sky Survey. The cluster has a redshift z=0.3007 and a velocity dispersion of about 900 km/sec. This is the first giant arc newly found in a ROSAT Survey cluster, indicating the potential advantage of searching for giant arcs in X-ray selected clusters.
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