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首页> 外文期刊>The Astrophysical journal >NOVAE EJECTA AS DISCRETE ADIABATICALLY EXPANDING GLOBULES
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NOVAE EJECTA AS DISCRETE ADIABATICALLY EXPANDING GLOBULES

机译:NOVAE EJECTA作为离散绝热扩展的球

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摘要

Available data for novae show that the X-ray and visible spectral regions correlate with each other as they evolve. Large differences in ionization exist simultaneously in the two wavelength regimes, and a straightforward model is proposed that explains the characteristics observed in both spectral regimes. Its key features are (1) ejected blobs of very high density gas from the white dwarf (WD) that expand to create within each clump a wide range of emitting density, ionization, and velocity, and (2) a more homogeneous circumbinary envelope of gas that is produced by secondary star mass loss. The relative mass loss rates from the two stars determine whether the He/N or the Fe II visible spectrum predominates during decline, when hard X-rays are detected, and when the WD can be detected as a super soft X-ray source.
机译:新星的可用数据表明,X射线和可见光谱区域随着它们的发展而相互关联。两种波长方案同时存在较大的电离差异,并提出了一个简单的模型来解释两种光谱方案中观察到的特征。它的主要特征是(1)从白矮星(WD)喷射出的非常高密度气体的团块,这些团块会在每个团块中扩展以产生大范围的发射密度,电离和速度,以及(2)更加均匀的环绕包络次级恒星质量损失产生的气体。来自两颗恒星的相对质量损失率决定了在下降期间,何时检测到硬X射线以及何时可以将WD检测为超软X射线源,He / N或Fe II可见光谱是否占主导地位。

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