标题： X射线背景合成：红外线的关联 显示英文标题

标题： X-ray background synthesis: the infrared connection

摘要： 我们基于中红外和X射线巡天之间的交叉相关性，提出了一种X射线背景的综合模型，在该模型中假设2型源的分布遵循明亮红外星系的分布，而1型源则由观测到的ROSAT分布追踪。 对X射线数目计数和背景光谱的最佳拟合至少需要一些密度演化。 我们探索了2型光度函数演化变量参数空间的一个有限范围。 使红移分布与在深场Chandra和XMM中观测到的相匹配时，我们发现弱残差作为来自红移相对峰值范围内源的Fe发射的标志。 这扩展了Franceschini等人最近的工作，并强调了被遮蔽的活动星系核与恒星形成活动之间可能存在的相关性。 显示英文摘要

摘要： We present a synthesis model of the X-ray background based on the cross-correlation between mid-infrared and X-ray surveys, where the distribution of type 2 sources is assumed to follow that of luminous infrared galaxies while type 1 sources are traced by the observed ROSAT distribution. The best fits to both the X-ray number counts and background spectrum require at least some density evolution. We explore a limited range of parameter space for the evolutionary variables of the type 2 luminosity function. Matching the redshift distribution to that observed in deep Chandra and XMM fields, we find weak residuals as a signature of Fe emission from sources in a relatively peaked range of redshift. This extends the recent work of Franceschini et al., and emphasizes the possible correlation between obscured AGN and star-forming activity.