The Spectrum of Th-Ar Hollow Cathode Lamps in the 691-5804 nm region: Establishing Wavelength Standards for the Calibration of Infrared Spectrographs
The Spectrum of Th-Ar Hollow Cathode Lamps in the 691-5804 nm region: Establishing Wavelength Standards for the Calibration of Infrared Spectrographs
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Th-Ar 空心阴极灯在 691-5804 nm 区域的光谱：建立红外光谱仪校准的波长标准
DOI：
10.1086/590111
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
C. Sansonetti
中科院分区：
文献类型：
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作者：
F. Kerber;Gillian Nave;C. Sansonetti
我们报告的红外（IR）光谱的低电流钍-氩空心阴极灯与2米傅里叶变换光谱仪（FTS）在美国国家标准与技术研究所的新观察。这些观测建立了超过2400条线，适合用作900-4500 nm范围内的波长标准。该线列表被用作物理仪器模型的输入，该物理仪器模型为低温高分辨率红外阶梯光谱仪（CRIRES）提供波长校准，CRIRES是欧洲南方天文台在甚大望远镜上的新高分辨率（R 100，000）红外光谱仪。我们还观察到的Th-Ar灯的光谱作为工作电流的函数的变化。结果使我们能够优化光谱输出的相对强度和线密度的操作上的望远镜。我们的研究结果应该是普遍有用的波长校准在近红外天文学，提供了一个高密度的尖锐的，良好的特征发射线的商业放电灯的操作的方便性和效率。
We report new observations of the infrared (IR) spectrum of low-current Th-Ar hollow cathode lamps with the 2 m Fourier transform spectrometer (FTS) at the National Institute of Standards and Technology. These observations establish more than 2400 lines that are suitable for use as wavelength standards in the range 900-4500 nm. The line list is used as input for a physical instrument model that provides the wavelength calibration for the Cryogenic High-Resolution IR Echelle Spectrometer (CRIRES), the European Southern Observatory’s new high-resolution (R ∼ 100,000) IR spectrograph at the Very Large Telescope. We have also observed the variation of the spectrum of Th-Ar lamps as a function of operating current. The results allow us to optimize the spectral output in terms of relative intensity and line density for operation on the telescope. Our results should be generally useful for wavelength calibration in near-IR astronomy, providing a high density of sharp, well-characterized emission lines with the ease and efficiency of operation of a commercial discharge lamp.