天鹰座老新星I. V603的远紫外光谱分析。

IF 5.1 2区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Astronomical Journal Pub Date : 2015-07-01 Epub Date: 2015-07-07 DOI:10.1088/0004-6256/150/1/36

Edward M Sion, Patrick Godon, Alexandra Bisol

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引用次数: 1

摘要

我们介绍了对快老新星V603 Aql的远紫外档案IUE, HST和FUSE观测的综合光谱分析结果，这些观测是在1918年新星爆发后大约90年获得的。我们的分析利用了新的哈勃FGS视差距离来分析这颗几乎正面朝上的老新星，它是一颗高白矮星质量和低变红。我们的分析包括非截断的光学厚吸积盘，因为V603 Aql既不是极也不是中间极。我们分别分析了FUSE和HST光谱的合成光谱模型，得出了FUSE和HST光谱的传质率[公式:见文本]，假设WD质量为1.2M⊙。质量吸积率也取决于假设的WD质量，当WD质量为0.8M⊙时，质量吸积率会增加2倍。将FUSE和HST的光谱结合在一起会得到相同的结果。讨论了潜在的影响。

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Far Ultraviolet Spectroscopy of Old Novae I. V603 Aquila.

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.

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来源期刊

Astronomical Journal 地学天文-天文与天体物理

CiteScore

8.40

自引率

24.50%

发文量

501

审稿时长

2-4 weeks

期刊介绍： The Astronomical Journal publishes original astronomical research, with an emphasis on significant scientific results derived from observations. Publications in AJ include descriptions of data capture, surveys, analysis techniques, astronomical interpretation, instrumentation, and software and computing.