AzTEC/ASTE 1.1 mm survey of SSA22: Counterpart identification and
  photometric redshift survey of submillimeter galaxies
  We present the results from a 1.1 mm imaging survey of the SSA22 field, known
for having an overdensity of z=3.1 Lyman-alpha emitting galaxies (LAEs), taken
with the AzTEC camera on the Atacama Submillimeter Telescope Experiment (ASTE).
We imaged a 950 arcmin$^2$ field down to a 1 sigma sensitivity of 0.7-1.3
mJy/beam to find 125 submillimeter galaxies (SMGs) with a signal to noise ratio
>= 3.5. Counterpart identification using radio and near/mid-infrared data was
performed and one or more counterpart candidates were found for 59 SMGs.
Photometric redshifts based on optical to near-infrared images were evaluated
for 45 SMGs of these SMGs with Spitzer/IRAC data, and the median value is found
to be z=2.4. By combining these estimation with estimates from the literature
we determined that 10 SMGs might lie within the large-scale structure at z=3.1.
The two-point angular cross-correlation function between LAEs and SMGs
indicates that the positions of the SMGs are correlated with the z=3.1
protocluster. These results suggest that the SMGs were formed and evolved
selectively in the high dense environment of the high redshift universe. This
picture is consistent with the predictions of the standard model of
hierarchical structure formation.
