论文标题

国际象棋:高分辨率,远处光谱的创新概念

CHESS: an Innovative Concept for High-Resolution, Far-UV Spectroscopy

论文作者

Hoadley, Keri, France, Kevin, Nell, Nicholas, Kane, Robert, Fleming, Brian, Youngblood, Allison, Beasley, Matthew

论文摘要

空间紫外线(UV)是一个关键的天文观测窗口,其中多种原子,离子和分子特征为行星,星际,星际,恒星,呈果皮和乳层外物体提供了至关重要的见解。下一代大空间望远镜需要高度敏感的中度到高分辨率UV光谱仪。但是,紫外线的敏感观察结果很困难,因为紫外线的光学性能和成像效率落后于可见的和红外机制。从历史上看,这导致了简单,低弹药的仪器,以提高灵敏度。在这项研究中,我们介绍了简单,高分辨率的高吞吐量远处光谱仪的设计,制造和校准 - 科罗拉多州高分辨率Echelle Echelle Stellar Spectrograph(Chess)。国际象棋是一款响亮的火箭有效载荷,可展示下一代紫外线太空望远镜的仪器设计。我们介绍了几种最先进的衍射光栅和探测器技术的测试和结果,用于在国际象棋的前两次迭代中飞行的远道天文应用。国际象棋光谱仪用于研究星际培养基(ISM)中通过吸收光谱的半透明云区域内的原子到分子过渡。前两次航班看着朝着Alpha处女座和Epsilon Persei的视线,并提出了飞行结果。

The space ultraviolet (UV) is a critical astronomical observing window, where a multitude of atomic, ionic, and molecular signatures provide crucial insight into planetary, interstellar, stellar, intergalactic, and extragalactic objects. The next generation of large space telescopes require highly sensitive, moderate-to-high resolution UV spectrograph. However, sensitive observations in the UV are difficult, as UV optical performance and imaging efficiencies have lagged behind counterparts in the visible and infrared regimes. This has historically resulted in simple, low-bounce instruments to increase sensitivity. In this study, we present the design, fabrication, and calibration of a simple, high resolution, high throughput far-UV spectrograph - the Colorado High-resolution Echelle Stellar Spectrograph (CHESS). CHESS is a sounding rocket payload to demonstrate the instrument design for the next-generation UV space telescopes. We present tests and results on the performance of several state-of-the-art diffraction grating and detector technologies for far-UV astronomical applications that were flown aboard the first two iterations of CHESS. The CHESS spectrograph was used to study the atomic-to-molecular transitions within translucent cloud regions in the interstellar medium (ISM) through absorption spectroscopy. The first two flights looked at the sightlines towards alpha Virgo and epsilon Persei, and flight results are presented.

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