Development and Construction of a Fiber-Fed, High-ThroughputEschelle Spectrograph for the Michigan-Dartmouth-MIT Observatory

为密歇根-达特茅斯-麻省理工学院天文台开发和建造光纤馈电、高通量埃谢勒摄谱仪

• 批准号: 9413847
• 负责人: Mario Mateo
• 金额: $ 17.06万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-09-01 至 1999-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9413847&HistoricalAwards=false
• 关键词: Development; Construction; Fiber; Fed; ThroughputEschelle

ABSTRACT AST-9413847 Mateo, Mario The PIs will build a high-efficiency, multi-object fiber-fed echelle spectrograph for the Hiltner 2.4m telescope at Michigan-Dartmouth-MIT observatory. The design will optimize resolution, compactness, and allow for easy changes of echelle grating/cross disperser combinations, and form direct mode (single objects) to fiber mode (multiple objects ). The capabilities and versatility of this instrument will significantly enhance the research capabilities of the Michigan-Dartmouth-MIT (MDM) Observatory and make the 2.4 telescope competitive with far larger telescopes for certain observational problems. Detailed studies in a number of areas of fundamental astronomical importance will be undertaken by the large community of MDM astronomers. These projects include; a) studies of the dark matter content of dwarf galaxies in the Local Group and beyond, b) detailed measurements of the temporal evolution of key elements in disk and halo stars, c) direct measurements of the kinematics of gas in the halos of our Galaxy and external spirals, d) observations of the detailed kinematical properties of supernova and nova shells in our Galaxy and in external systems, e) definitive studies of the kinematics of star clusters including the first direct attempts to measure the degree of equipartition in clusters, f) systematically monitoring stars in open and globular clusters to search for spectroscopic binaries, g) measurements of the distance to the Galactic Center via precise kinematics observations of Cepheids along the solar circle, and h) probing the physical conditions and chemical composition of the diffuse interstellar medium in our Galaxy. The variety of topics underscores the scientific community that will use the new spectrograph and the versatility of the instrument itself. ***

摘要 马特奥，马里奥，AST-9413847 PI将为位于密歇根-达特茅斯-麻省理工学院天文台的Hiltner 2.4米望远镜建造一台高效率、多目标光纤馈电中阶梯光栅光谱仪。 该设计将优化分辨率，紧凑性，并允许方便地改变中阶梯光栅/交叉色散器组合，并形成直接模式（单个物体）到光纤模式（多个物体）。 这台仪器的能力和多功能性将大大提高密歇根-达特茅斯-麻省理工学院（MDM）天文台的研究能力，并使2.4望远镜在某些观测问题上与大得多的望远镜竞争。 MDM天文学家的广大社区将在一些具有基本天文学重要性的领域进行详细研究。 这些项目包括：a）研究本星系群及以外矮星系的暗物质含量，B）详细测量盘星和晕星中关键元素的时间演化，c）直接测量我们银河系晕和外部螺旋中气体的运动学，d）观测我们银河系和外部系统中超新星和新星壳的详细运动学特性，e）对星星团运动学的确定性研究，包括首次尝试测量星团中的均分程度，f）系统地监测疏散星团和球状星团中的恒星，以寻找光谱双星，g）通过对造父变星沿着太阳圈的精确运动学观测，测量到银河系中心的距离，以及h）探测银河系中弥漫星际介质的物理条件和化学成分。 主题的多样性强调了将使用新光谱仪的科学界和仪器本身的多功能性。 ***