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Environmental Dependence of Star Formation in 9 EDisCS Galaxy Clusters
Mann, Justin
Mann, Justin
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Abstract
To understand the physical processes that govern the suppression of star formation in galax-ies residing in over dense environments, it is necessary to track their journey into those regions. We present Multiband Imaging Photometer on Spitzer (MIPS) 24μm data covering the infall re- gions of 9 clusters chosen from the European Southern Observatory (ESO) Distant Cluster Survey (EDisCS) at intermediate redshifts (0.5 < z < 0.8) . In addition to the data obtained for the central cluster regions by the EDisCS survey, several spectroscopic surveys were performed and used to define cluster infall region membership. Using the 24μm flux as a proxy for dust obscured star formation rate (SFR), we find that the nominal fraction of infrared luminous galaxies within the cluster only reaches that of the field well beyond R 200 . Furthermore, average star formation rates of cluster members show no trend with clustercentric radius, remaining consistent with the average field value throughout the cluster.
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Date
2022-08-31
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University of Kansas
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Keywords
Astrophysics, Dust-Obscured Star Formation, EDisCS, Galaxy Evolution