标题： 三颗快速振荡Ap星TIC 96315731、TIC 72392575和TIC 318007796的脉动 显示英文标题

标题： Pulsations of Three Rapidly Oscillating Ap Stars TIC 96315731, TIC 72392575, and TIC 318007796

摘要： 我们分析了三颗已知的roAp星，TIC 96315731、TIC 72392575和TIC 318007796，使用来自凌日系外行星勘测卫星（TESS）的光变曲线。 对于TIC 96315731，旋转频率和脉动频率分别为$0.1498360\,\mathrm{d}^{-1}$和$165.2609\,\mathrm{d}^{-1}$。 在TIC 72392575的情况下，旋转频率是$0.25551\,\mathrm{d}^{-1}$。 我们检测到一个脉动频率五重态，中心频率为$135.9233\,\mathrm{d}^{-1}$，以及五重态第二对旋转边带中的两个信号，这两个信号由旋转频率分隔。 这两个信号可能对应于偶极模式的频率。 在TIC 318007796中，旋转频率和脉动频率分别为$0.2475021\,\mathrm{d}^{-1}$、$192.73995\,\mathrm{d}^{-1}$和$196.33065\,\mathrm{d}^{-1}$。 基于斜向脉动模型，我们计算了恒星的旋转倾角$\left( i \right)$和磁极偏角$\left( \beta \right)$，这提供了脉动模态的几何结构。结合频率五重频的相位、脉动振幅和相位调制曲线以及球谐分解的结果，我们得出结论，TIC 96315731、TIC 72392575 和 TIC 318007796 中的频率五重频的脉动模态分别对应于畸变偶极模态、畸变四极模态和畸变偶极模态。 显示英文摘要

摘要： We analyze the frequencies of three known roAp stars, TIC 96315731, TIC 72392575, and TIC 318007796, using the light curves from the Transiting Exoplanet Survey Satellite (TESS). For TIC 96315731, the rotational and pulsational frequencies are $0.1498360\,\mathrm{d}^{-1}$ and $165.2609\,\mathrm{d}^{-1}$, respectively. In the case of TIC 72392575, the rotational frequency is $0.25551\,\mathrm{d}^{-1}$. We detect a quintuplet of pulsation frequencies with a center frequency of $135.9233\,\mathrm{d}^{-1}$, along with two signals within the second pair of rotational sidelobes of the quintuplet separated by the rotation frequency. These two signals may correspond to the frequencies of a dipole mode. In TIC 318007796, the rotational and pulsational frequencies are $0.2475021\,\mathrm{d}^{-1}$, $192.73995\,\mathrm{d}^{-1}$, and $196.33065\,\mathrm{d}^{-1}$, respectively. Based on the oblique pulsator model, we calculate the rotation inclination $\left( i \right)$ and magnetic obliquity angle $\left( \beta \right)$ for the stars, which provides the geometry of the pulsation modes. Combining the phases of the frequency quintuplets, the pulsation amplitude and phase modulation curves, and the results of spherical harmonic decomposition, we conclude that the pulsation modes of frequency quintuplets in TIC 96315731, TIC 72392575, and TIC 318007796 correspond to distorted dipole mode, distorted quadrupole mode, and distorted dipole mode, respectively.