Nowhere Left to Hide: Closing in on Dusty Galaxies at High Redshift

AST-0708653BakerDR.罗格斯大学的安德鲁·贝克将利用他的特权，使用位于西弗吉尼亚州格林班克的100米射电望远镜的创新仪器Zspectroeter，以及已经批准用于他们班级中三台最灵敏的毫米波射电望远镜的300多个小时的观测。他将执行一个项目，在新墨西哥州甚大阵列绘制的最深区域内，以高角度分辨率绘制大片天空区域的地图，并将尘土飞扬的高红移星系与它们最接近的局部类似星系进行详细比较。这个综合观测计划的目标是识别、定位和表征长波长的尘埃星系的广泛样本，这些样本中出现了最大比例的辐射光度。这种直接方法对于将大量但含糊不清的光学数据的解释固定在更大、更具代表性的、更容易理解的目标集上是有价值的。早期宇宙中明亮的尘埃星系一直很难详细研究。新的数据将有助于理解这些隐藏的星系在恒星形成、吸积和质量聚集的宇宙史中所扮演的角色。该项目包括贝克博士支持社区科学观测，在其向设备仪器状态过渡的前一年，贝克博士支持其他小组使用Z频谱仪仪器进行的社区科学观测，从而扩大了培训范围，使早期宇宙科学能够得到更广泛的种类。这项工作将提高绿岸望远镜、(扩展的)甚大阵列、大学射电天文台和(未来)阿塔卡马大毫米阵列观测计划的重点和效率。该项目包括培训一名罗格斯大学的研究生，可能是来自代表性不足的群体。

AST-0708653BakerDr. Andrew Baker of Rutgers University will exploit his privileged access to the Zpectrometer, an innovative new instrument at the 100-m radio telescope in Green Bank, West Virginia, and over 300 hours of observations already approved for three of the most sensitive millimeter-wave radio telescopes in their classes. He will carry out a program to map a large sky region at high angular resolution, within the deepest field ever mapped by the Very Large Array in New Mexico, and make a detailed comparison of dusty high-redshift galaxies with their closest local analogs. The goals of this comprehensive observational program are to identify, localize, and characterize broad samples of dusty, distant galaxies at the long wavelengths where the greatest fractions of their bolometric luminosities emerge. Such a direct approach is valuable in anchoring the interpretation of extensive but ambiguous optical data to a larger, more representative set of well-understood targets. Luminous, dusty galaxies in the early Universe have remained stubbornly difficult to study in detail. The new data will help to understand the role of these hidden galaxies in the cosmic histories of star formation, accretion, and mass assembly.The project includes Dr Baker's support of community science observations with the Zpectrometer instrument by other groups in the year preceding its transition to facility instrument status, thereby broadening training and enabling an even wider variety of early Universe science. The work will improve the focus and efficiency of observing programs at the Green Bank Telescope, the (Expanded) Very Large Array, the University Radio Observatories, and the (future) Atacama Large Millimeter Array. The program involves the training of a Rutgers graduate student, probably one from an under-represented group.