The Extragalactic Near Infrared Background

河外近红外背景

• 批准号: 8616765
• 负责人: R. Partridge
• 金额: $ 13.28万
• 依托单位: Haverford College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-04-15 至 1990-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8616765&HistoricalAwards=false
• 关键词: Extragalactic; Near; Infrared; Background

Boughn The objectives of this research are to bring new observational techniques to bear on the problem of galaxy formation. How and when galaxies and other large bound systems in the Universe form is not well understood. The detection of primeval galaxies, galaxies forming their first generation of stars early in the history of the Universe and hence at high redshift, would be a major step forward. No such objects have yet been found despite more than a decade of effort. Two new techniques will be used to investigate primeval galaxies. The first is to look for the summed light from many primeval galaxies rather than for individual objects. The Principal Investigators (PIs) will do so by measuring the brightness of the night sky at near infrared wavelengths using a balloon-borne, cooled telescope. The second is to make careful studies of possible local analogs of primeval galaxies, nearby systems which are currently undergoing massive bursts of star formation. The PIs will look for a characteristic feature or "tag" of star formation which could then be used to identify primeval galaxies at much greater distances. Radio frequency observations will be made of a range of star-forming systems at low redshifts, and also of the "blue galaxies" at redshifts 0.1-1.0, which may be at an intermediate stage of evolution between local starburst galaxies and true primeval galaxies. Drs. Partridge and Boughn will carry out collaborative research with Italian scientists from the University of Bologna as part of their research. The research will involve undergraduate students at Haverford College.

鲍恩 这项研究的目的是带来新的观察 研究星系形成问题的技术 如何以及 当宇宙中的星系和其他大型束缚系统形成时 并没有得到很好的理解。 对原始星系的探测， 星系形成了它们的第一代恒星， 宇宙的历史，因此在高红移，将是一个 向前迈出的重要一步。 目前还没有发现这样的物体， 十多年的努力。 两种新技术将被用于研究原始星系。 第一种是寻找来自许多原始的光的总和， 星系而不是单个物体。 校长 调查人员（PI）将通过测量 夜空中的近红外波长使用球载， 冷却望远镜 二是认真研究 可能的原始星系的本地类似物，附近的系统， 正在经历大规模的星星爆发。 的 PI将寻找星星的特征或“标签 可以用来识别原始星系 在更远的地方 无线电频率观测将 由一系列低红移的恒星形成系统组成， 也是红移0.1-1.0的“蓝星系”，可能在 在局部星爆和 星系和真正的原始星系 帕拉迪纳博士和鲍恩博士将进行合作研究， 与博洛尼亚大学的意大利科学家合作， 他们的研究。 这项研究将涉及本科生 在哈弗福德学院