纯氢白矮星NLTE模式大气\newline的新网格和HST/STIS通量校正
New Grids of Pure-Hydrogen White-Dwarf NLTE Model Atmospheres \newline and the HST/STIS Flux Calibration
摘要：
热白矮星（WD）模型大气的非定域热力学平衡（NLTE）计算是哈勃空间望远镜（HST）和CALSPEC数据库现代通量校准的基石。这些理论光谱能量分布（SED）提供了相对通量与波长的关系，只有绝对通量水平仍有待通过将可见光中织女星的测量绝对通量与中红外天狼星的中途空间实验（MSX）值相协调来设置。与GD 71相比，从1500 μ m到30 \micron的一致性由2000 μ m到5 \micron的1%提高到1%。这些新的NLTE型号的热WD现在提供从FUV到中红外的一致通量标准。
英文摘要：
Non-local Thermodynamic Equilibrium (NLTE) calculations of hot white dwarf (WD) model atmospheres are the cornerstone of modern flux calibrations for the Hubble Space Telescope (HST) and for the CALSPEC database. These theoretical spectral energy distributions (SEDs) provide the relative flux vs. wavelength, and only the absolute flux level remains to be set by reconciling the measured absolute flux of Vega in the visible with the Midcourse Space Experiment (MSX) values for Sirius in the mid-IR. The most recent SEDs calculated by the \textsc{tlusty} and \textsc{tmap} NLTE model atmosphere codes for the primary WDs G191-B2B, GD153, and GD71 show improved agreement to 1\% from 1500~Å to 30~\micron, in comparison to the previous 1\% consistency only from 2000~Å to 5~\micron. These new NLTE models of hot WDs now provide consistent flux standards from the FUV to the mid-IR.
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