z~2处的亚毫米亮类星体：高z共同演化的路标
Submm-bright QSOs at z~2: signposts of co-evolution at high z
摘要：
我们收集了5个X射线和亚毫米光z~2类星体的样本，它们都是通过吸积来生长它们的中心黑洞，并在关键时期大量形成恒星。因此，它们是研究恒星形成和活动星系核共同演化的良好实验室。我们已经进行了初步分析的活动星系核和SF的贡献，他们的UV-FIR的SED，拟合他们与简单的直接（磁盘），再处理（环面）和恒星形成组件。所有这三个都需要的数据，因此，我们确认，这些对象正在经历强大的恒星形成在其宿主星系的速率500-2000 Msun/y。其覆盖系数估计在30%至90%之间。在未来，我们将评估这些结果对用于组件的特定模型的依赖性，并将其观察到的特性与中央引擎和SF材料的本质以及它们与活动星系核-星系共同演化的相关性联系起来。
英文摘要：
We have assembled a sample of 5 X-ray and submm-luminous z~2 QSOs which are therefore both growing their central black holes through accretion and forming stars copiously at a critical epoch. Hence, they are good laboratories to investigate the co-evolution of star formation and AGN. We have performed a preliminary analysis of the AGN and SF contributions to their UV-to-FIR SEDs, fitting them with simple direct (disk), reprocessed (torus) and star formation components. All three are required by the data and hence we confirm that these objects are undergoing strong star formation in their host galaxies at rates 500-2000 Msun/y. Estimates of their covering factors are between about 30 and 90%. In the future, we will assess the dependence of these results on the particular models used for the components and relate their observed properties to the intrinsice of the central engine and the SF material, as well as their relevance for AGN-galaxy coevolution.
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