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Paper: Panoramic and Multi-Wavelength Study of the Distant Cluster RXJ1716 at z = 0.81
Volume: 399, Panoramic Views of Galaxy Formation and Evolution
Page: 361
Authors: Koyama, Y.; Kodama, T.; Tanaka, M.; Shimasaku, K.; Okamura, S.
Abstract: We study galaxies in and around the distant cluster RXJ1716 (z = 0.81) using deep and panoramic optical to mid-infrared imaging data obtained with Suprime-Cam on Subaru and IRC on the AKARI satellite. We find that the cluster member candidates detected at 15 μm are preferentially found in medium-density environments such as subclumps or filaments around the cluster. This suggests that the star-formation activity in galaxies is enhanced in those regions due to some environmental effects specific to such medium-density environments. This is before it is completely truncated as a consequence of quick gas consumption and/or removal.
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