Turbulent convection and pulsational stability of variable stars — IV. The red edge of the δ Scuti instability strip
Turbulent convection and pulsational stability of variable stars — IV. The red edge of the δ Scuti instability strip
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DOI：
10.1046/j.1365-8711.2001.04308.x
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发表时间：
2001-06
影响因子：
4.8
通讯作者：
D. Xiong;L. Deng
中科院分区：
文献类型：
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作者：
D. Xiong;L. Deng
利用非定域时变对流统计理论，对质量范围为1.4-3.0 M圆点的恒星进行了线性脉动不稳定性分析。结果定义了三角洲Scuti不稳定带的红色边缘，非常适合观测边界。结果表明，对流和振荡的动力学耦合以及湍流粘性是低温恒星的两个主要阻尼机制。
Using a non-local time-dependent statistical theory of convection, we made a linear pulsational instability analysis for stars in the mass range 1.4-3.0 M-circle dot. The results define a red edge for the delta Scuti instability strip, which fits the observational boundary very well. It is found that the dynamic coupling between convection and oscillation together with the turbulent viscosity are the two main damping mechanisms for low-temperature stars.