Eclipse mapping the flickering sources in the dwarf nova HT Cassiopeia
Eclipse mapping the flickering sources in the dwarf nova HT Cassiopeia
复制标题
日食绘制了矮新星 HT Cassiopeia 中的闪烁源
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
C. Papadimitriou
中科院分区：
文献类型：
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作者：
Raymundo Baptista;B. Borges;V. Kolokotronis;O. Giannakis;C. Papadimitriou
我们报告的结果日食映射分析的合奏光变曲线的HT Cas。白色矮星对质量传递速率增加的快速响应，同时吸积盘的膨胀速率，以及高频闪烁的相对振幅表明HT Has的静止盘具有高粘度，α ~ 0.3-0.7。这与盘不稳定性模型明显不一致，意味着HT Cas的爆发是由来自其施主星星的增强的质量传递速率的爆发引起的。
We report results of the eclipse mapping analysis of an ensemble of light curves of HT Cas. The fast response of the white dwarf to the increase in mass transfer rate, the expansion rate of the accretion disc at the same time, and the relative amplitude of the high-frequency flickering indicate that the quiescent disc of HT Has has high viscosity, alpha ~ 0.3-0.7. This is in marked disagreement with the disc-instability model and implies that the outbursts of HT Cas are caused by bursts of enhanced mass-transfer rate from its donor star.