AKARI Far-Infrared Source Counts in the Lockman Hole
Pearson, C. P.; Takagi, T.; Jeong, W. -S.; Matsuhara, H.; Oyabu, S.; Nakagawa, T.; Shibai, H.; Shirahata, M.; Matsuura, S.; Kawada, M.; Doi, Y.
Abstract
We report initial results of far-infrared observations of the Lockman Hole with Far-Infrared Surveyor onboard the AKARI infrared satellite. On the basis of slow-scan observations of a 0°.6 × 1°.2 contiguous area, we obtained source number counts at 65, 90, and 140 μm counts above 26 mJy account for about 7% of the cosmic background. These results provide strong constraints on the evolutionary scenario, and suggest that the current models may require modifications.