Collaborative Research: Bolometric Studies of Cosmic Star Formation History

合作研究：宇宙恒星形成历史的辐射热测量研究

• 批准号: 0709356
• 负责人: Lennox Cowie
• 金额: $ 31.99万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-08-15 至 2013-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0709356&HistoricalAwards=false
• 关键词: Collaborative; Research; Bolometric; Studies; Cosmic

AST-0709356/AST-0708793Cowie/BargerThis is a collaborative project led by Dr Cowie. Sub-millimeter observations with the revolutionary SCUBA camera on the James Clerk Maxwell Telescope on Mauna Kea, Hawaii, revealed the existence of a population of dust-obscured, ultra-luminous galaxies that dominates star formation in the high-redshift Universe. The new camera, SCUBA-2, speeds up the mapping of wide fields by almost three orders of magnitude, and will dramatically expand understanding of the sub-millimeter Universe and the history of dusty star formation. This project will carry out a SCUBA-2 survey of two heavily studied fields of the Great Observatories Origins Deep Survey (GOODS), during weather conditions suitable for observing at a wavelength of 450-microns. Since the confusion limit is lower at this wavelength, which is shorter than other wavelengths used, these data will be able to (i) measure the more typical sources contributing to the sub-millimeter background, (ii) measure fluxes close to the rest wavelength peak of the blackbody distribution, and (iii) obtain much more accurate positions for the sources. Combining the sub-millimeter data with radio, infrared, optical, and X-ray data, from space and from the ground, will determine the multi-wavelength properties of the distant, heavily dust-obscured sources, and provide accurate positions for spectroscopic follow-up. The research will determine redshifts, luminosities, and star formation rates, and thus trace the extent and evolution of obscured star formation in the distant Universe.Understanding the star formation history of the universe is a major goal of modern astronomy, and of great public interest. This research will inform popular science articles, web sites, and frequent talks to broad sections of the technical and lay communities. Previous data collected by these investigators have been made available to the community and have proved valuable for many outside projects: this practice of regular release will continue with the new survey data. Both investigators continue to promote diversity and cultural interaction at their respective institutions, including students from throughout the Pacific arena (in Hawaii), and a strong effort to involve women (in Wisconsin), who remain a vastly under-represented group.

AST-0709356/AST-0708793 Cowie/Barger这是一个由Cowie博士领导的合作项目。 利用位于夏威夷莫纳克亚山的詹姆斯·克拉克麦克斯韦望远镜上革命性的水下呼吸器照相机进行的亚毫米观测揭示了一群尘埃遮蔽的超亮星系的存在，它们主导着高红移宇宙中星星的形成。 新相机SCUBA-2将大视场的测绘速度提高了近三个数量级，并将极大地扩展对亚毫米宇宙和尘埃星星形成历史的理解。 该项目将在适合于450微米波长观测的天气条件下，对大天文台起源深度调查（GOODS）的两个深入研究的区域进行SCUBA-2调查。 由于在这个波长下的混淆极限较低，这个波长比使用的其他波长短，这些数据将能够（i）测量对亚毫米背景有贡献的更典型的源，（ii）测量接近黑体分布的静止波长峰值的通量，以及（iii）获得源的更精确的位置。 将亚毫米数据与来自太空和地面的无线电，红外线，光学和X射线数据相结合，将确定遥远的多波长特性，严重的灰尘遮蔽源，并为光谱跟踪提供准确的位置。 这项研究将确定红移、光度和星星形成率，从而追踪遥远宇宙中被遮蔽的星星形成的程度和演变。了解宇宙的星星形成历史是现代天文学的一个主要目标，也是公众极大的兴趣所在。 这项研究将为科普文章、网站以及与技术和非专业社区的广泛部门的频繁会谈提供信息。 这些调查员以前收集的数据已提供给社区，并证明对许多外部项目很有价值：新的调查数据将继续定期公布。 两位调查人员继续在各自的机构促进多样性和文化互动，包括来自整个太平洋竞技场（在夏威夷）的学生，并努力让妇女参与（在威斯康星州），她们仍然是一个代表性严重不足的群体。