Masking versus removing point sources in CMB data: the source corrected
  WMAP power spectrum from new extended catalogue
  In (Scodeller et al.) a new and extended point source catalogue obtained from
the WMAP 7-year data was presented. It includes most of the sources included in
the standard WMAP 7-year point source catalogues as well as a large number of
new detections. Here we study the effects on the estimated CMB power spectrum
when taking the newly detected point sources into consideration. We create
point source masks for all the 2102 sources that we detected as well as a
smaller one for the 665 sources detected in the Q, V and W bands. We also
create WMAP7 maps with point sources subtracted in order to compare with the
spectrum obtained with source masks. The extended point source masks and point
source cleaned WMAP7 maps are made publicly available. Using the proper
residual correction, we find that the CMB power spectrum obtained from the
point source cleaned map without any source mask is fully consistent with the
spectrum obtained from the masked map. We further find that the spectrum
obtained masking all 2102 sources is consistent with the results obtained using
the standard WMAP 7-year point source mask (KQ85y7). We also verify that the
removal of point sources does not introduce any skewness.
