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MRI: Development of Chiron: CTIO High Resolution Spectrometer

MRI：Chiron 的开发：CTIO 高分辨率光谱仪

基本信息

批准号：
0923441
负责人：
Debra Fischer
金额：
$ 60.38万
依托单位：
San Francisco State University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2009
资助国家：
美国
起止时间：
2009-08-15 至 2011-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0923441&HistoricalAwards=false
关键词：
MRI Development Chiron CTIO Resolution

项目摘要

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).One of the most effective means employed by astronomers to search for planets around stars other than our sun is to try to detect the velocity shift of the star as the planet moves about the star in its orbit. This well proven technique employs an instrument called a spectrograph to measure the small shifts in the wavelengths of features in a star's spectrum. The shifts are due to the familiar Doppler effect and are directly related to the changes in the star's velocity. Demand for telescopes that have a spectrograph of sufficient power and resolution to find these velocity shifts is increasing and more are needed to satisfy the demand. Dr. Debra Fischer of San Francisco State University is building a new spectrograph designed for such studies using funds awarded from NSF's Major Research Instrumentation program. This new spectrograph will be much more efficient in its use of telescope time than the current instrument, and will also allow astronomers to determine velocities much more accurately. When completed, the spectrograph will be placed on a 1.5-meter telescope at Cerro Tololo Inter-American Observatory (CTIO) in Chile. CTIO is publicly funded by NSF and research time on its telescopes is available to all astronomers through a competitive merit review process.

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。天文学家在太阳以外的恒星周围寻找行星的最有效手段之一，就是当行星在其轨道上绕着星星运动时，试图探测星星的速度变化。这种经过充分验证的技术采用了一种称为摄谱仪的仪器来测量星星光谱中特征波长的微小变化。这些位移是由于熟悉的多普勒效应，并且与星星速度的变化直接相关。对具有足够功率和分辨率的摄谱仪以发现这些速度变化的望远镜的需求正在增加，并且需要更多来满足需求。旧金山弗朗西斯科州立大学的黛布拉·菲舍尔博士正在利用美国国家科学基金会主要研究仪器项目提供的资金建造一台新的光谱仪。这种新的摄谱仪在利用望远镜时间方面将比目前的仪器更有效，也将使天文学家能够更准确地确定速度。完成后，光谱仪将被放置在智利Cerro Tololo美洲天文台（CTIO）的1.5米望远镜上。 CTIO由NSF提供公共资金，所有天文学家都可以通过竞争性的择优评审程序获得其望远镜的研究时间。