Infrared spectral energy distribution decomposition of WISE-selected, hyperluminous hot dust-obscured galaxies

摘要: We utilize a Bayesian approach to fit the observed mid-IR-to-submm/mm spectral energy distributions (SEDs) of 22 WISE-selected and submm-detected, hyperluminous hot dust-obscured galaxies. By adopting Torus+GB model, we decompose IR SEDs Hot DOGs into torus cold dust components. The main results are: 1) in our submm-detected sample are hyperluminous, with emission dominating output. However, is non-negligible, averagely contributing ~24% total luminosity. 2) Compared QSO starburst SED templates, median shows highest luminosity ratio between mid-IR submm at rest-frame, while it very similar that QSOs 10-50um suggesting heating sources should be buried AGNs. 3) have both high temperatures ~73K dust. T-L relation suggests increase for mostly due temperature, rather than mass. lower masses those submillimeter galaxies (SMGs) within redshift range. Both relatively low mass can expected by their temperatures. 4) covering factors, which deviate previously proposed trend factor decreasing increasing bolometric Finally, reproduce properties employing physical model galaxy evolution. result may lie or close peaks star formation black hole growth histories, represent transit phase during evolution massive galaxies, transforming from dusty dominated optically bright phase. (abridged)