Journal article
Far-infrared source counts at 70 and 160 microns in Spitzer deep surveys
H Dole, E Le Floc'h, PG Perez-Gonzalez, C Papovich, E Egami, G Lagache, A Alonso-Herrero, CW Engelbracht, KD Gordon, DC Hines, O Krause, KA Misselt, JE Morrison, GH Rieke, MJ Rieke, JR Rigby, ET Young, L Bai, M Blaylock, G Neugebauer Show all
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES | IOP PUBLISHING LTD | Published : 2004
DOI: 10.1086/422472
Abstract
We derive galaxy source counts at 70 and 160 μm using the Multiband Imaging Photometer for Spitzer (MIPS) to map the Chandra Deep Field-South (CDF-S) and other fields. At 70 μm, our observations extend upward about 2 orders of magnitude in flux density from a threshold of 15 mJy, and at 160 μm they extend about an order of magnitude upward from 50 mJy. The counts are consistent with previous observations on the bright end. Significant evolution is detected at the faint end of the counts in both bands, by factors of 2-3 over no-evolution models. This evolution agrees well with models that indicate that most of the faint galaxies lie at redshifts between 0.7 and 0.9. The new Spitzer data alrea..
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