Spitzer深层观测中70μm和160μm远红外源计数
天体物理学
2009-11-10 v2
摘要
我们利用面向Spitzer空间望远镜的多带图像光度计(MIPS)对赤道深层场南(CDFS)及其他场地进行观测，推导70μm和160μm的星系源计数。观测在70μm波段延伸至flux密度约15mJy阈值以上约两个数量级，在160μm波段延伸至50mJy阈值以上约一个数量级。计数结果与以往观测在亮端一致。在两个波段的暗端均检测到显著演化，演化因子为2-3倍，超过不考虑演化模型。该演化与大多数暗淡星系位于0.7至0.9红移范围内的模型良好吻合。新获得的Spitzer数据已在70μm波段解决约23%的宇宙远红外背景，在160μm波段解决约7%。
引用
@article{arxiv.astro-ph/0406021,
title = {Far Infrared Source Counts at 70 and 160 microns in Spitzer Deep Surveys},
author = {H. Dole and E. Le Floc'h and P. G. Perez-Gonzalez and C. Papovich and E. Egami and G. Lagache and A. Alonso-Herrero and C. W. Engelbracht and K. D. Gordon and D. C. Hines and O. Krause and K. A. Misselt and J. E. Morrison and G. H. Rieke and M. J. Rieke and J. R. Rigby and E. T. Young and L. Bai and M. Blaylock and G. Neugebauer and C. A. Beichman and D. T. Frayer and J. R. Mould and P. L. Richards},
journal= {arXiv preprint arXiv:astro-ph/0406021},
year = {2009}
}
备注
Small modifications to match printed version. Models in Differential Counts plots were changed. MIPS Source Counts are available at: http://lully.as.arizona.edu/GTODeep/Counts/ . Accepted for Publication in ApJS Special Issue on Spitzer