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We present the photometric properties of a sample of infrared (IR) brightdust obscured galaxies (DOGs). Combining wide and deep optical images obtainedwith the Hyper Suprime-Cam (HSC) on the Subaru Telescope and all-sky mid-IR(MIR) images taken with Wide-Field Infrared Survey Explorer (WISE), wediscovered 48 DOGs with $i - K_\mathrm{s} > 1.2$ and $i - [22] > 7.0$, where$i$, $K_\mathrm{s}$, and [22] represent AB magnitude in the $i$-band,$K_\mathrm{s}$-band, and 22 $\mu$m, respectively, in the GAMA 14hr field($\sim$ 9 deg$^2$). Among these objects, 31 ($\sim$ 65 %) show power-lawspectral energy distributions (SEDs) in the near-IR (NIR) and MIR regime, whilethe remainder show a NIR bump in their SEDs. Assuming that the redshiftdistribution for our DOGs sample is Gaussian, with mean and sigma $z$ = 1.99$\pm$ 0.45, we calculated their total IR luminosity using an empirical relationbetween 22 $\mu$m luminosity and total IR luminosity. The average value of thetotal IR luminosity is (3.5 $\pm$ 1.1) $\times$ $10^{13}$ L$_{\odot}$, whichclassifies them as hyper-luminous infrared galaxies (HyLIRGs). We also derivedthe total IR luminosity function (LF) and IR luminosity density (LD) for aflux-limited subsample of 18 DOGs with 22 $\mu$m flux greater than 3.0 mJy andwith $i$-band magnitude brighter than 24 AB magnitude. The derived spacedensity for this subsample is log $\phi$ = -6.59 $\pm$ 0.11 [Mpc$^{-3}$]. TheIR LF for DOGs including data obtained from the literature is well fitted by adouble-power law. The derived lower limit for the IR LD for our sample is$\rho_{\mathrm{IR}}$ $\sim$ 3.8 $\times$ 10$^7$ [L$_{\odot}$ Mpc$^{-3}$] andits contributions to the total IR LD, IR LD of all ultra-luminous infraredgalaxies (ULIRGs), and that of all DOGs are $>$ 3 %, $>$ 9 %, and $>$ 15 %,respectively.

Hyper-luminous Dust Obscured Galaxies discovered by the Hyper Suprime-Cam on Subaru and WISE