谢波斯和 ISO 太红段星系计数
摘要
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.
引用
@article{arxiv.astro-ph/0501513,
title = {Spitzer and ISO Galaxy Counts in the Mid-Infrared},
author = {Chris P. Pearson},
journal= {arXiv preprint arXiv:astro-ph/0501513},
year = {2009}
}
备注
6 pages, 2 figures, accepted for publication MNRAS