Journal or Book Title
ASTRONOMY & ASTROPHYSICS
We present a comparison of the SCUBA half degree extragalactic survey (SHADES) at 450 μm, 850 μm and 1100 μm with deep guaranteed time 15 μm AKARI FU-HYU survey data and Spitzer guaranteed time data at 3.6-24 μm in the Lockman hole east. The AKARI data was analysed using bespoke software based in part on the drizzling and minimum-variance matched filtering developed for SHADES, and was cross-calibrated against ISO fluxes. Our stacking analyses find AKARI 15 μm galaxies with 200 μJy contribute >10% of the 450 μm background, but only <4% of the 1100 μm background, suggesting that different populations contribute at mm-wavelengths. We confirm our earlier result that the ultra-deep 450 μm SCUBA-2 cosmology survey will be dominated by populations already detected by AKARI and Spitzer mid-infrared surveys. The superb mid-infrared wavelength coverage afforded by combining Spitzer and AKARI photometry is an excellent diagnostic of AGN contributions, and we find that (23-52)% of submm-selected galaxies have AGN bolometric fractions fAGN > 0.3.
Serjeant, S; Negrello, M; Pearson, C; Mortier, A; Austermann, J; Aretxaga, I; Clements, D; Chapman, S; Dye, S; Dunlop, J; Dunne, L; Farrah, D; Hughes, D; Lee, HM; Matsuhara, H; Ibar, E; Im, M; Jeong, WS; Kim, S; Oyabu, S; Takagi, T; Wada, T; Wilson, G; Vaccari, M; and Yun, Min, "The AGN fraction of submm-selected galaxies and contributions to the submm/mm-wave extragalactic background light" (2010). ASTRONOMY & ASTROPHYSICS. 810.