We present the results of a synthetic spectral analysis of the far ultraviolet archival IUE, HST and FUSE observations of the fast old nova V603 Aql, obtained some 90 years after its 1918 nova outburst. Our analysis utilizes the new Hubble FGS parallax distance for this nearly face-on old nova, a high white dwarf mass and a low reddening. Our analysis includes non-truncated optically thick accretion disks since V603 Aql is neither a polar nor an intermediate polar. Our synthetic spectral modeling of the FUSE and HST spectra analyzed separately indicate a mass transfer rate [Formula: see text] for the FUSE and HST spectra respectively, assuming a WD mass of 1.2M⊙. The mass accretion rate also depends on the assumed WD mass, and increases by a factor of two for a WD mass of 0.8M⊙. Combining the FUSE and HST spectra together lead to the same results. Potential implications are discussed.

中文翻译：

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旧新星的远紫外光谱。一、V603天鹰座

我们展示了远紫外线档案 IUE、HST 和 FUSE 观测的合成光谱分析结果，该观测结果是在 1918 年新星爆发后约 90 年获得的快速老新星 V603 Aql。我们的分析利用新的哈勃 FGS 视差距离来分析这颗近乎正面的老新星、一颗高白矮星质量和低变红度。我们的分析包括未截断的光学厚吸积盘，因为 V603 Aql 既不是极地也不是中间极地。我们分别分析的 FUSE 和 HST 光谱的合成光谱模型分别表明 FUSE 和 HST 光谱的传质速率 [公式：见正文]，假设 WD 质量为 1.2M⊙。质量吸积率还取决于假设的 WD 质量，并且对于 0.8M⊙ 的 WD 质量增加两倍。将 FUSE 和 HST 光谱结合在一起会得到相同的结果。