TO ~ 10500 nm波段水汽吸收能力的实验研究
A Laboratory Study of Absorbing Capacity of Water Vapor at the Wavelengths from 6500 TO 10500 Å
摘要：
我们用多程池获得了6500-10500 nm波长的水蒸气吸收光谱。沿观察线的水蒸气含量从0.1到3.0 cm沉淀水变化，压力从0.1到1.0 atm。在分光光度计的出口狭缝的宽度为25、50、100和150 nm时拍摄光谱。为了匹配这些光谱，我们选择了经验函数，其近似于在水蒸气含量和压力的指示区间内观察到的吸收，精度约为1%。对于波长区域7200、8200和9300 nm处的水蒸气带，我们以25 nm的步长确定了计算经验透射函数所需的参数。所提供的数据使人们有可能选择的参数，考虑到辐射衰减的光谱区的大地水汽在一个特定的地方和分光光度计的条件下，实际天文观测。所建议的经验参数组可以提供观测恒星光谱的大气消光修正，精度为0.m01-0.m02。
英文摘要：
We obtained laboratory spectra of absorption by water vapor at the wavelengths 6500-10500 Å with the multipass cell. The water vapor content along the line of view varied from 0.1 to 3.0 cm of precipitated water, the pressure from 0.1 to 1.0 atm. The spectra were taken with the width of the exit slit of the spectrophotometer 25, 50, 100, and 150 Å. To match these spectra, we selected empirical functions, which approximate the observed absorption within the indicated interval of water vapor content and pressure with the accuracy about 1%. For the water vapor band at the wavelengths regions 7200, 8200, and 9300 Å, with the step 25 Å, we determined the parameters necessary for the calculation of empirical transmission functions. The presented data make it possible to select the parameters for taking into account the radiation attenuation in the spectral region of telluric water vapor under the conditions of real astronomical observations for a specific place and spectrophotometer. The suggested set of empirical parameters may provide correction of observed stellar spectra for the extinction in the atmosphere with the accuracy 0.m01-0.m02.
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