VizieR Online Data Catalog: Properties of giant arcs behind CLASH clusters (Xu+, 2016)

B Xu, M Postman, M Meneghetti, S Seitz, A Zitrin, J Merten, D Maoz, B Frye, K Umetsu, W Zheng

Research output: Contribution to journalArticlepeer-review

Abstract

Giant arcs are found in the CLASH images and in simulated images that mimic the CLASH data, using an efficient automated arc-finding algorithm whose selection function has been carefully quantified. CLASH is a 524-orbit multicycle treasury program that targeted 25 massive clusters with 0.18<z<0.90. Twenty of the CLASH clusters are selected based on their X-ray characteristics. The CLASH observations for each cluster consist of 16 broadband images (spanning the range 0.23μ-1.6μ) using the WFC3/UVIS, WFC3/IR, and ACS/WFC instruments on board HST. We run our arc finder on the detection (ACS + WFC3/IR) image created for each cluster. We detect a raw total of 187 arcs with l/w>=6.5 in 20 X-ray-selected CLASH clusters. After applying our minimum arc length criterion l>=6", the arc count drops to 81 giant arcs selected from the 20 X-ray-selected CLASH clusters.
Original languageEnglish
Pages (from-to)J-ApJ
JournalVizieR Online Data Catalog
StatePublished - 2018

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