Invited Presentation

STUDIES (SCUBA-2 Ultra Deep Imaging EAO Survey): Current Status and Results

Author(s):

Presenter: Wei-Hao Wang (ASIAA)

STUDEIS is a 330-hr JCMT Large Program, aiming for a confusion limited 450 um map in the COSMOS-CANDELS area for the studies of the high-z dusty galaxy population. In this talk, we will report the results derived from the data taken in 2015/2016 (140 hr). The SCUBA-2 daisy map has an rms noise of <0.9 mJy at its center, with 140 sources detected at 3.5 sigma over ~150 square-arcmin. Nearly all 4 sigma sources (98) have MIPS and IRAC counterparts. They have a broad redshift distribution between z=0.5 and 3.0, with a median of 1.5. The faintest ones at z~1 have IR luminosities slightly above 10^11 L_sun. The 450 um source counts derived with 4 sigma sources and fluctuation analyses are consistent with a single power law between 1 and 25 mJy and show no evidence of a faint-end turn-over. Our integrated surface brightness down to 1 mJy can account for 48% to 83% of the CIB measured by COBE and Planck. The final 330-hr version of the STUDIES map should help to better pin down the resolved EBL at ~ 1 mJy and to test the satellite results.