静止期矮新星UU Aql、BV Cen和CH UMa的FUSE观测
FUSE Observations of the Dwarf Novae UU Aql, BV Cen, and CH UMa in Quiescence
摘要：
我们报告的FUSE光谱的三个U宝石型，长周期，矮新星，UU Aql，BV Cen和CH UMa在其平静的时间间隔。我们讨论了它们光谱中的谱线识别，并试图描述它们FUV通量分布的来源。CH UMa和BV Cen在静止时的存档IUE光谱被识别为具有与FUSE光谱匹配的通量水平，并且这些与每个FUSE光谱组合以扩大波长覆盖范围并进一步约束模型拟合。从我们的模型网格，包括单温白矮星，双温白矮星，吸积盘和白矮星加吸积盘的多组分合成光谱拟合，被施加到单独的FUSE光谱和组合FUSE + IUE光谱。我们提出了我们的模型分析的结果及其影响。
英文摘要：
We report on FUSE spectra of three U Gem-type, long period, dwarf novae, UU Aql, BV Cen and CH UMa taken during their quiescence intervals. We discuss the line identifications in their spectra and attempt to characterize the source(s) of their FUV flux distribution. Archival IUE spectrum of CH UMa and BV Cen in quiescence were identified as having a matching flux level with the FUSE spectra and these were combined with each FUSE spectrum to broaden the wavelength coverage and further constrain model fits. Multi-component synthetic spectral fits from our model grids, consisting of single temperature white dwarfs, two-temperature white dwarfs, accretion disks and white dwarfs plus accretion disks, were applied to the FUSE spectra alone and to the combined FUSE + IUE spectra. We present the results of our model analyses and their implications.
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