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arXiv 1610.05910astro-ph.GAastro-ph.CO
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恒星形成星系和活动星系核的高红移主序列

The Main Sequences of Starforming Galaxies and Active Galactic Nuclei at High Redshift

Claudia Mancuso, A. Lapi, J. Shi, J. Gonzàlez-Nuevo, M. Bèthermin, L. Danese

摘要:

我们提供了一个新的,统一的物理解释的起源,平均形状,散射和宇宙演化的主要序列的恒星形成星系和活动星系核在高红移z $\gtrsim$ 1。我们实现了这一目标,在一个独立的模型的方式利用:(i)红移依赖的SFR函数的基础上,最新的紫外/远红外数据从HST/Herschel,和相关的统计强引力透镜源;(ii)确定性的演化轨迹的历史恒星形成和黑洞吸积,衡量了丰富的多波长观测,包括观测到的爱丁顿比分布。我们进一步验证这些成分,通过连续性方程的方法显示它们与观测到的星系恒星质量函数和活动星系核的辐射光度函数在不同的红移的一致性。我们的高红移星系和活动星系的主要序列的分析强调,目前的数据一致的解释在原位的恒星形成和黑洞吸积的共同进化的情况下,设想这些作为本地的,时间协调的过程。

英文摘要:

We provide a novel, unifying physical interpretation on the origin, the average shape, the scatter, and the cosmic evolution for the main sequences of starforming galaxies and active galactic nuclei at high redshift z $\gtrsim$ 1. We achieve this goal in a model-independent way by exploiting: (i) the redshift-dependent SFR functions based on the latest UV/far-IR data from HST/Herschel, and re- lated statistics of strong gravitationally lensed sources; (ii) deterministic evolutionary tracks for the history of star formation and black hole accretion, gauged on a wealth of multiwavelength observations including the observed Eddington ratio distribution. We further validate these ingredients by showing their consistency with the observed galaxy stellar mass functions and AGN bolometric luminosity functions at different redshifts via the continuity equation approach. Our analysis of the main sequence for high-redshift galaxies and AGNs highlights that the present data are consistently interpreted in terms of an in situ coevolution scenario for star formation and black hole accretion, envisaging these as local, time coordinated processes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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