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The Dusty Young Universe - Infrared and Sub-millimeter Photometry of High Redshift Quasars

尘土飞扬的年轻宇宙——高红移类星体的红外和亚毫米光度测量

基本信息

批准号：
127037405
负责人：
Professor Dr. Klaus Winfried Meisenheimer (†)
金额：
--
依托单位：
Max-Planck-Institut für Astronomie (MPIA)
依托单位国家：
德国
项目类别：
Priority Programmes
财政年份：
2009
资助国家：
德国
起止时间：
2008-12-31 至 2010-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/127037405?language=en
关键词：
Dusty Young Universe Infrared Sub

项目摘要

The detection of a significant fraction of the highest redshift quasars (z > 5) in the (sub-)mm wavelength range indicates that a substantial amount of dust has been synthesized already during the first billion years since the Big Bang. 24 µm observations with Spitzer have shown that very hot dust is present close to the QSO core in most z > 5 quasars. However, these observations can only catch tails of the dust emission spectrum, at rest  200 µm, and at rest < 5 µm, respectively. Measuring the peak of the dust emission had been beyond the capabilities of previous satellites or ground-based sub-mm telescopes. Thus, critical properties, such as FIR luminosity, dust temperatures and masses, remained unconstrained.Our approved Herschel Key Programme will collect far-infrared and sub-millimeter photometry of more than 100 high redshift quasars using the PACS and SPIRE instruments. It targets three samples of QSOs: (i) all z > 5 quasars known to date, (ii) a dozen radio loud quasars and galaxies, and (iii) 29 Broad Absorption Line (BAL) quasars plus a comparison sample of 17 non-BAL QSOs. Complementary mid- and near-IR observations are currently collected with Spitzer and from the ground. This unique data set will allow a comprehensive study of quasar related star formation. Thus it probes the earliest phases of black hole growth and galaxy formation, which are a central theme of this Priority Programme. We ask for 1.5 (BAT IIa equivalent) positions to secure that its scientific potential is realized as fast as possible.

在（亚）毫米波长范围内探测到相当一部分最高红移类星体（z bbbb5）表明，在大爆炸后的第一个十亿年中已经合成了大量的尘埃。用斯皮策24µm观测表明，在大多数z bbbb5类星体的QSO核心附近存在非常热的尘埃。然而，这些观测结果只能捕捉到尘埃发射光谱的尾部，在最大剩余距离为200µm处，以及在最大剩余距离< 5µm处。测量尘埃发射的峰值已经超出了以前的卫星或地面亚毫米望远镜的能力。因此，关键性质，如FIR亮度，尘埃温度和质量，仍然不受限制。我们批准的赫歇尔重点项目将使用PACS和SPIRE仪器收集100多个高红移类星体的远红外和亚毫米光度。它的目标是三个qso样本：(i)迄今为止已知的所有z bbbb50类星体，（ii） 12个射电响亮类星体和星系，以及（iii） 29个宽吸收线（BAL）类星体和17个非BAL qso的比较样本。补充的中红外和近红外观测目前是由斯皮策和地面收集的。这个独特的数据集将允许对类星体相关的恒星形成进行全面的研究。因此，它探索黑洞生长和星系形成的最早阶段，这是这个优先计划的中心主题。我们要求提供1.5个（相当于BAT IIa）职位，以确保尽快实现其科学潜力。