Dust Emission in the Starburst Quasar Host Galaxies at Redshift 6

Our group have been carrying out a systematic survey of the star formation and ISM properties in the host galaxies of zvirgul6 quasars, and strong millimeter dust continuum and highlyexcited molecular gas have been discovered in the host galaxies of about 30% of quasars at zvirgul6, indicating the presence of massive star formation coeval with rapid supermassive black hole (SMBH) accretion in these earliest quasar host galaxies close to end of cosmic reionization. In this proposal, we request Herschel/SPIRE photometric observations of the restframe FIR continuum emission from three of the millimeter bright zvirgul6 quasars. The FIR emission from star formationheated warm dust provides the most reliable measurement of the star formation rate in the quasar host galaxies at the highest redshift. The SPIRE observation samples the peak of the FIR SED from quasars/galaxies at zvirgul6, and thus, are critical in the study of dust temperature, dust mass, FIR luminosity and star formation rate in these ealiest quasarstarburst systems. We have an approved ALMA Cycle 0 project of image the [C II] fine structure line and 1mm dust continuum emission and measure the distribution of the star formation in these three objects (and another two zvirgul6 quasars observed in an existing Herschel Key Program). The accurate measurements of star formation rates with SPIRE and spatial distribution/surface densities with ALMA will put key constraints on the early growth of the quasar spheroidal host galaxies at the earliest epoch. We also require PACS photometric observation of the 100 um and 160 um dust continuum emission from one of the three objects, J2310+1855, at z6.002. This object is a rare Low ionization Broad Absorption Line quasar, but show very bright millimeter continuum and molecular CO line emission from the quasar host. The PACS observation will measure the restframe midinfrared continuum emission and allow us to invest [trunc [truncated!, Please see actual data for full text]

本课题组对zvirgul6类类星体宿主星系中的恒星形成及其星际介质（ISM）特性进行了系统性的调查研究，发现约30%的zvirgul6类星体宿主星系中存在强烈的毫米波尘埃连续辐射和高度激发的分子气体，这表明在这些最早的类星体宿主星系中，存在与快速超大质量黑洞（SMBH）吸积同步的巨大恒星形成活动，这些星系靠近宇宙再电离的末期。在本提案中，我们请求对三颗毫米波辐射明亮的zvirgul6类星体进行赫歇尔/SPIRE巡天光度观测，以获取其静红移红外连续辐射。由恒星形成活动加热的温暖尘埃产生的红外辐射提供了对类星体宿主星系中恒星形成速率的最高红移的最可靠测量。SPIRE观测能够采样zvirgul6类星体/星系的红外光谱能量分布（SED）峰值，因此在研究这些最早的类星体爆发系统中尘埃温度、尘埃质量、红外辐射亮度和恒星形成速率方面至关重要。我们已获得ALMA第0周期的项目批准，用以成像[C II]精细结构线和1毫米尘埃连续辐射，并测量这三个对象（以及另外两个在现有的赫歇尔关键项目中观测到的zvirgul6类星体）的恒星形成分布。使用SPIRE进行恒星形成速率的精确测量和使用ALMA进行空间分布/面密度的测量，将对类星体椭球状宿主星系在最早时期的发展施加关键的限制。此外，我们还要求对三个对象之一，J2310+1855，在z6.002处进行PACS光度观测，以获取100微米和160微米尘埃连续辐射。该对象是一种罕见的低电离宽带吸收线类星体，但表现出非常明亮的毫米波连续辐射和来自类星体宿主星系的分子CO线辐射。PACS观测将测量静红移中红外连续辐射，并允许我们研究[trunc [截断！请参阅实际数据以获取完整文本]]
}