Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-01-24
Mon.Not.Roy.Astron.Soc. 358 (2005) 1417-1422
Astronomy and Astrophysics
Astrophysics
6 pages, 2 figures, accepted for publication MNRAS
Scientific paper
10.1111/j.1365-2966.2005.08861.x
Galaxy source counts that simultaneously fit the deep mid-infrared surveys at 24 microns and 15 microns made by the Spitzer Space Telescope and the Infrared Space Observatory (ISO) respectively are presented for two phenomenological models. The models are based on starburst and luminous infrared galaxy dominated populations. Both models produce excellent fits to the counts in both wavebands and provide an explanation for the high redshift population seen in the longer Spitzer 24 micron band supporting the hypothesis that they are luminous-ultraluminous infrared galaxies at z=2-3, being the mid-infrared counterparts to the sub-mm galaxy population. The source counts are characterized by strong evolution to redshift unity, followed by less drastic evolution to higher redshift. The number-redshift distributions in both wavebands are well explained by the effect of the many mid-infrared features passing through the observation windows. The sharp upturn at around a milliJansky in the 15 micron counts in particular depends critically on the distribution of mid-infrared features around 12 microns, in the assumed spectral energy distribution.
No associations
LandOfFree
Spitzer and ISO Galaxy Counts in the Mid-Infrared does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Spitzer and ISO Galaxy Counts in the Mid-Infrared, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spitzer and ISO Galaxy Counts in the Mid-Infrared will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-311929