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Description
A detailed analysis of Herschel-PACS observations at the North Ecliptic Pole has been made. High quality maps, covering an area of 0.44 square degrees, are produced and then used to derive new candidate source lists. A rigorous quality control pipeline has been used to create final legacy catalogues in the PACS Green 100um and Red 160um bands, containing 1385 and 630 sources respectively. These catalogues reach to more than twice the depth of the current archival Herschel/PACS Point Source Catalogue detecting 401 and 270 more sources in the short and long wavelength bands respectively. These counts have been used to construct galaxy source counts that extend down to flux densities of 6mJy and 19mJy (50% completeness) in the Green 100 micron and Red 160 micron bands respectively. These source counts are consistent with previously published PACS number counts in other fields across the sky. The source counts have been compared with galaxy evolution models identifying a population of luminous infrared galaxies as responsible for the bulk of the galaxy evolution over the flux range (5-100mJy) spanned by the observed counts, contributing approximate fractions of 50% and 60% to the cosmic infrared background (CIRB) at 100um and 160um respectively.
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