Imaging the Thermal and Kinematic Sunyaev-Zel'dovich Effect Signals in a Sample of 10 Massive Galaxy Clusters: Constraints on Internal Velocity Structures and Bulk Velocities

We have imaged the Sunyaev-Zel'dovich (SZ) effect signals at 140 and 270. GHz toward 10 galaxy clusters with Bolocam and AzTEC/ASTE. We also used Planck data to constrain the signal at large angular scales, Herschel-SPIRE images to subtract the brightest galaxies that comprise the cosmic infrared background (CIB), Chandra imaging to map the electron temperature T-e of the intra-cluster medium, and Hubble Space Telescope imaging to derive models of each galaxy cluster's mass density. The galaxy clusters gravitationally lens the background CIB, which produced an on-average reduction in brightness toward the galaxy clusters' centers after the brightest galaxies were subtracted. We corrected for this deficit, which was between 5% and 25% of the 270. GHz SZ effect signal within R-2500. Using the SZ effect measurements, along with the X-ray constraint on T-e, we measured each galaxy cluster's average line of sight (LOS) velocity v(z) within R-2500, with a median per-cluster uncertainty of +/- 700 km s(-1). We found an ensemble-mean < v(z)> of 430. +/-. 210 m s(-1), and an intrinsic cluster-to-cluster scatter sigma(int) of 470. +/-. 340 km s(-1). We also obtained maps of vz over each galaxy cluster's face with an angular resolution of 70 ''. All four galaxy clusters previously identified as having a merger oriented along the LOS showed an excess variance in these maps at a significance of similar or equal to 2-4 sigma, indicating an internal v(z) rms of greater than or similar to 1000 km s(-1). None of the six galaxy clusters previously identified as relaxed or plane-of-sky mergers showed any such excess variance.