A WISE View of Star Formation in Local Galaxy Clusters
  We present results from a systematic study of star formation in local galaxy
clusters using 22 micron data from the Wide-field Infrared Survey Explorer
(WISE). The 69 systems in our sample are drawn from the Cluster Infall Regions
Survey (CIRS), and all have robust mass determinations. The all-sky WISE data
enables us to quantify the amount of star formation, as traced by 22 micron, as
a function of radius well beyond R200, and investigate the dependence of total
star formation rate upon cluster mass. We find that the fraction of
star-forming galaxies increases with cluster radius but remains below the field
value even at 3 R200. We also find that there is no strong correlation between
the mass-normalized total specific star formation rate and cluster mass,
indicating that the mass of the host cluster does not strongly influence the
total star formation rate of cluster members.
