Multiwavelength perspective of AGN evolution

Multiwavelength perspective of AGN evolution
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AGN 演化的多波长视角

DOI:
10.1063/1.3475261
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发表时间:
2010
期刊:
arXiv: Cosmology and Nongalactic Astrophysics
影响因子:
--
通讯作者:
F. Fiore
F. Fiore
中科院分区:
--
文献类型:
--
作者:
F. Fiore

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在z>1-3发现和研究被遮挡的活动星系核不仅对完成活动星系核普查很重要,而且因为它们可以精确定位核吸积和恒星形成同时代的星系,并标志着活动星系核反馈的开始。我们给出了关于z=1-3星系的最新结果,这些星系是因为高中红外与光通量比而被选中的,表明它们是大质量和强烈恒星形成的星系,并且许多星系确实拥有高度遮蔽的活动星系核。我们提出了一个试点计划,将搜索中度模糊的活动星系核推进到z=5-6,并讨论了这一研究方向的前景。
Discovering and studying obscured AGN at z>1-3 is important not only to complete the AGN census, but also because they can pinpoint galaxies where nuclear accretion and star-formation are coeval, and mark the onset of AGN feedback. We present the latest results on the characterization of z=1-3 galaxies selected for their high mid-infrared to optical flux ratio, showing that they are massive and strongly star-forming galaxies, and that many do host highly obscured AGN. We present a pilot program to push the search of moderately obscured AGN up to z=5-6 and discuss the perspectives of this line of research.