A Very High Resolution Infrared Astronomical Spectrograph

高分辨率红外天文摄谱仪

• 批准号: 9120546
• 负责人: John Lacy
• 金额: $ 32.43万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-05-15 至 1996-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9120546&HistoricalAwards=false
• 关键词: Very; Resolution; Infrared; Astronomical; Spectrograph

A very high resolution (R = 1.2 x 105) mid-infrared spectrograph for astronomical observations is proposed. The spectrograph will be a liquid helium cooled, double-pass, echelle using a 40 cm long grating. It will be able to resolve lines with 2.5 km s-1 Doppler width and will have a noise-equivalent line flux of ~ 4 x 10-14 erg s-1 cm-2 (1. in 1 second), allowing high signal-to-noise observations of many young stars embedded in molecular clouds. The instrument will be used primarily for studies of interstellar molecules. Very high resolution and high sensitivity observations are necessary for infrared observations of molecular clouds, especially the regions around young stars.

提出了一种用于天文观测的非常高分辨率（R = 1.2 x 105）中红外光谱仪。光谱仪将是一个液氦冷却，双通道，梯队使用40厘米长的光栅。它将能够分辨2.5 km s-1多普勒宽度的谱线，并且具有~ 4 × 10-14 erg s-1 cm-2的噪声等效谱线通量。在1秒内)，允许对嵌入分子云中的许多年轻恒星进行高信噪比观测。该仪器将主要用于研究星际分子。分子云特别是年轻恒星周围区域的红外观测需要非常高分辨率和高灵敏度的观测。