G9 .5巨玻色子Oph？脉动模型符合MOST光度测定
Nonradial p-modes in the G9.5 giant epsilon Oph? Pulsation model fits to MOST photometry
摘要：
G9.5巨星eps Oph在径向速度和光度上都显示出径向p模式脉动的证据。我们重新检查所观察到的频率的光度和径向速度，并找到一个最好的模型适合18个最重要的光度频率。所观察到的频率匹配的最佳模型拟合的径向和非径向模式。频率与模型预测频率的微小离散表明，模式的平均寿命可以长达10- 20 d。最佳拟合模型本身，仅受所观察到的频率的约束，位于eps Oph在HR图中的位置和干涉确定的半径的1 σ内。
英文摘要：
The G9.5 giant eps Oph shows evidence of radial p-mode pulsations in both radial velocity and luminosity. We re-examine the observed frequencies in the photometry and radial velocities and find a best model fit to 18 of the 21 most significant photometric frequencies. The observed frequencies are matched to both radial and nonradial modes in the best model fit. The small scatter of the frequencies about the model predicted frequencies indicate that the average lifetimes of the modes could be as long as 10-20d. The best fit model itself, constrained only by the observed frequencies, lies within 1 sigma of eps Oph's position in the HR-diagram and the interferometrically determined radius.
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