We measure the SZ signal toward a set of 47 clusters with a median mass of
9.5×1014 M⊙ and a median redshift of 0.40 using data from
Planck and the ground-based Bolocam receiver. When Planck XMM-like masses are
used to set the scale radius θs, we find consistency between
the integrated SZ signal, Y5R500, derived from Bolocam and Planck
based on gNFW model fits using A10 shape parameters, with an average ratio of
1.069±0.030 (allowing for the ≃5% Bolocam flux calibration
uncertainty). We also perform a joint fit to the Bolocam and Planck data using
a modified A10 model with the outer logarithmic slope β allowed to vary,
finding β=6.13±0.16±0.76 (measurement error followed by
intrinsic scatter). In addition, we find that the value of β scales with
mass and redshift according to β∝M0.077±0.026×(1+z)−0.06±0.09. This mass scaling is in good agreement with recent
simulations. We do not observe the strong trend of β with redshift seen
in simulations, though we conclude that this is most likely due to our sample
selection. Finally, we use Bolocam measurements of Y500 to test the
accuracy of the Planck completeness estimate. We find consistency, with the
actual number of Planck detections falling approximately 1σ below the
expectation from Bolocam. We translate this small difference into a constraint
on the the effective mass bias for the Planck cluster cosmology results, with
(1−b)=0.93±0.06.Comment: Updated to include one additional co-author. Also some minor changes
to the text based on initial feedbac