Measurement Astrophysics: SI-Calibrated Standard Stars

测量天体物理学：SI 校准的标准恒星

• 批准号: 1009878
• 负责人: John McGraw
• 金额: $ 98.28万
• 依托单位: University of New Mexico
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-09-01 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1009878&HistoricalAwards=false
• 关键词: Measurement; Astrophysics; SI; Calibrated; Standard

Dr. McGraw and his collaborators will undertake an observational and instrumental effort to create a series of standard stars whose flux (energy received per second) is accurately calibrated. The project will include modifications to the Astronomical Lidar for Extinction, an NSF-funded effort to use light scattering from lasers to measure the transmission properties of the atmosphere. The main goals of the project are to implement the new instrumentation to measure the extinction in the atmosphere to accuracies below 1% (including variations with time, direction, and wavelength), and to obtain simultaneous measurements of candidate standard stars with a spectrophotometric telescope calibrated with standard photodiodes.The techniques and instruments developed by this project would have a broad impact to the community, particularly if the instrumentation is duplicated and adopted by other observatories. This would increase the number of useful nights at major facilities by providing better atmospheric corrections, and would address calibration issues for projects such as surveys for dark energy. There will also be an extensive effort in workforce development, especially by including undergraduates in several different phases of the effort. This would target students at the University of New Mexico, a major Hispanic-serving institution.

麦格劳博士和他的合作者将进行一项观测和仪器工作，以创建一系列标准恒星，这些恒星的流量(每秒接收的能量)得到了准确的校准。该项目将包括对灭绝天文激光雷达的修改，这是一项由美国国家科学基金会资助的利用激光的光散射来测量大气传输特性的努力。该项目的主要目标是实施新的仪器，以测量大气中的消光精度到1%以下(包括随时间、方向和波长的变化)，并使用经标准光电二极管校准的分光望远镜同时测量候选标准恒星。该项目开发的技术和仪器将对社区产生广泛影响，特别是如果该仪器被其他天文台复制和采用。这将通过提供更好的大气校正来增加主要设施的有用夜间数量，并将解决暗能量调查等项目的校准问题。还将在劳动力发展方面做出广泛努力，特别是通过将本科生纳入努力的几个不同阶段。这将针对新墨西哥大学的学生，这是一所主要的拉美裔服务机构。