Resolved Herschel photometry and line spectroscopy for the brightest lensed galaxy at zvirgul2

We propose to obtain deep, spatiallyresolved Herschel PACS and SPIRE photometry and PACs and HIFI spectroscopy of the brightest (in the restUV) lensed galaxy yet discovered, RCS0327 at z1.7038. The goal is to characterize the dustreprocessed spectral energy distribution (SED) of a typical starforming galaxy at the epoch when half the Universe.s stars formed. Because RCS0327 extends across 38 arcsec, Herschel will spatially resolve it, and thus will measure spectral energy distributions in multiple spatiallydistinct regions. The resulting SED will serve as one of very few templates of lowextinction star forming galaxies beyond the local universe. We will measure the farinfrared luminosity and thus infer a star formation rate, which we will compare to rates measured from the optical/nIR. Finally, we will measure the luminosities of the [O I] 63 and [C II] 158 micron lines, which with the farIR luminosity constrain the densities, pressures, and radiation fields of the photodissociation regions. Such observations are impossible for Herschel in the distant universe without lensing amplification. [truncated!, Please see actual data for full text] [truncated!, Please see actual data for full text]

本研究旨在获取迄今为止发现的亮度最高的（在静止UV波段）引力透镜放大星系RCS0327在z1.7038处的深度、空间分辨的赫歇尔PACS和SPIRE光度测量以及PACS和HIFI光谱学数据。目标是对宇宙一半恒星形成时期的一个典型恒星形成星系的尘埃重新处理光谱能量分布（SED）进行表征。鉴于RCS0327横跨38角秒，赫歇尔望远镜能够对其空间分辨，从而测量多个空间上不同区域的光谱能量分布。所得SED将成为少数几个本地宇宙之外低消光恒星形成星系的模板之一。我们将测量远红外光度，从而推断出恒星形成率，并将其与从光学/近红外测量得到的恒星形成率进行比较。最后，我们将测量[O I] 63和[C II] 158微米线的亮度，这些线与远红外光度结合可以约束光解区的密度、压力和辐射场。在没有透镜放大效应的情况下，赫歇尔望远镜在遥远宇宙中进行此类观测是难以实现的。[截断！请参阅实际数据以获取全文][截断！请参阅实际数据以获取全文]