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PROPERTIES OF THE SCUBA-2 850 μm SOURCES IN THE AKARI NEP-DEEP FIELD
서현종,정웅섭,김민진,김성진,고종완,표정현,김민규,Chris Pearson,Laia Barrufet,Maria del Carmen Campos Varillas,Hideo Matsuhara,Matt Malkan,Helen K. Kim,Toshinobu Takagi,Takamitsu Miyaji,Jorge Diaz Tello,Tomotsugu Goto,Nagi 한국천문학회 2018 Journal of The Korean Astronomical Society Vol.51 No.3
We carry out the study of SMGs in the $AKARI$ NEP-Deep field using James Clerk Maxwell Telescope (JCMT) SCUBA-2 850 $\mu$m source catalog released as a part of SCUBA-2 Cosmology Legacy Survey (S2CLS) program. The SCUBA-2 850 $\mu$m map has a root mean square (rms) noise of 1.2 mJy beam$^{-1}$ and covers an area of 0.60 degree$^{2}$. We find 4 sub-millimeter galaxies (SMGs) which have counterparts to $Herschel$ sources with spectroscopic redshifts in the literature. In addition, 3 dust obscured galaxies (DOGs) detected in $Herschel$ bands are also selected as a comparison sample. We derive IR luminosities of SMGs using CIGALE code, which are similar to those of high redshift SMGs from previous studies. The contribution of AGN to the total IR luminosity in SMG (2\%$-$11\%) is smaller than lower limit of that in DOG (19\%$-$35\%), which is consistent with the expectation from the evolutionary scenario of massive galaxies. We search for SMGs in the overdense region as candidates of protocluster and investigate 4 candidates among them including candidates around three DOGs. Finally, we argue that follow-up spectroscopic observation for the NEP-Deep field will provide crucial information to understand the role of SMGs in the evolution of massive galaxies.