TY - JOUR
T1 - The AGN fraction of submm-selected galaxies and contributions to the submm/mm-wave extragalactic background light
AU - Serjeant, S.
AU - Negrello, M.
AU - Pearson, C.
AU - Mortier, A.
AU - Austermann, J.
AU - Aretxaga, I.
AU - Clements, D.
AU - Chapman, S.
AU - Dye, S.
AU - Dunlop, J.
AU - Dunne, L.
AU - Farrah, D.
AU - Hughes, D.
AU - Lee, H-M.
AU - Matsuhara, H.
AU - Ibar, E.
AU - Im, M.
AU - Jeong, W-S.
AU - Kim, S.
AU - Oyabu, S.
AU - Takagi, T.
AU - Wada, T.
AU - Wilson, G.
AU - Vaccari, M.
AU - Yun, M.
PY - 2010/5
Y1 - 2010/5
N2 - We present a comparison of the SCUBA half degree extragalactic survey (SHADES) at 450 mu m, 850 mu m and 1100 mu m with deep guaranteed time 15 mu m AKARI FU-HYU survey data and Spitzer guaranteed time data at 3.6-24 mu m 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 mu m galaxies with greater than or similar to 200 mu Jy contribute > 10% of the 450 mu m background, but only < 4% of the 1100 mu m background, suggesting that different populations contribute at mm-wavelengths. We confirm our earlier result that the ultra-deep 450 mu m 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 f(AGN) > 0.3.
AB - We present a comparison of the SCUBA half degree extragalactic survey (SHADES) at 450 mu m, 850 mu m and 1100 mu m with deep guaranteed time 15 mu m AKARI FU-HYU survey data and Spitzer guaranteed time data at 3.6-24 mu m 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 mu m galaxies with greater than or similar to 200 mu Jy contribute > 10% of the 450 mu m background, but only < 4% of the 1100 mu m background, suggesting that different populations contribute at mm-wavelengths. We confirm our earlier result that the ultra-deep 450 mu m 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 f(AGN) > 0.3.
UR - http://www.scopus.com/inward/record.url?scp=77951984169&partnerID=8YFLogxK
U2 - 10.1051/0004-6361/200913483
DO - 10.1051/0004-6361/200913483
M3 - Article
VL - 514
SP - -
JO - Astronomy and Astrophysics
JF - Astronomy and Astrophysics
SN - 0004-6361
M1 - A10
ER -