VizieR Online Data Catalog: IRAC Dark Field, ELAIS-N1 and ADF-S galaxies (Davidge+, 2017)

Source counts in the AKARI bands at 3.2, 4.1, 7, 11, 15 and 18μm are presented. At near-infrared wavelengths, our source counts are consistent with counts made in other AKARI fields and in general with Spitzer/IRAC (except at 3.2μm where our counts lie above). In the mid-infrared (11-18μm) we find our counts are consistent with both previous surveys by AKARI and the Spitzer peak-up imaging survey with the InfraRed Spectrograph (IRS). Using our counts to constrain contemporary evolutionary models we find that although the models and counts are in agreement at mid-infrared wavelengths there are inconsistencies at wavelengths shortward of 7μm, suggesting either a problem with stellar subtraction or indicating the need for refinement of the stellar population models. We have also investigated the AKARI/IRC filters, and found an AGN selection criteria out to z<2 on the basis of AKARI 4.1, 11, 15 and 18μm colours.

(3 data files).