新的时间依赖性WFC3/IR反灵敏度
New Time-Dependent WFC3/IR Inverse Sensitivities
AI总结：
本文提出新的时间依赖性WFC3/IR反灵敏度，通过分析光度数据和灵敏度变化斜率，提高了图像光度精度并更新了相关软件版本。
摘要：
我们提出了新的时间依赖性WFC3/IR通道的反灵敏度。这些值是通过测量由\citet{2024wfc..rept....6M}得出的灵敏度变化斜率以及从2009年到2023年收集的五个CALSPEC标准（白矮星GRW+70~5824、GD~153、GD~71、G191B2B和G型星P330E）的光度数据计算得出的。新的反灵敏度考虑了1-2%的15年损耗，取决于波长，并为所有宽、中和窄波段滤光器提供了优于0.5%的内部光度精度。已开发出更新的\texttt{calwf3}（v3.7.2）版本，用于与新的时间依赖性图像光度表（IMPHTTAB）一起使用，并将在2024年底的MAST重新处理中用于更新图像头光度关键词。或者，用户可以通过运行\texttt{stsynphot}来为特定的观测日期计算新的反灵敏度。
英文摘要：
We present new time-dependent inverse sensitivities for the WFC3/IR channel. These were calculated using the sensitivity change slopes measured by \citet{2024wfc..rept....6M} and photometry of five CALSPEC standards (the white dwarfs GRW+70~5824, GD~153, GD~71, G191B2B, and the G-type star P330E) collected from 2009 to 2023. The new inverse sensitivities account for losses of 1-2\% over 15 years, depending on wavelength, and provide an internal photometric precision better than 0.5\% for all wide--, medium--, and narrow-band filters. An updated version of \texttt{calwf3} (v3.7.2) has been developed for use with a new time-dependent image photometry table (IMPHTTAB) and will be used to update the image header photometric keywords following MAST reprocessing, expected in late-2024. Alternatively, the new inverse sensitivities may be computed by the user for a specific observation date by running \texttt{stsynphot}.
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