论文标题
KIC 5773205的$ 5/4 $可符合性，这是开普勒任务检测到的最小的红色矮人
A $5/4$ commensurability of KIC 5773205, the smallest eclipsing red dwarf detected by the Kepler mission
论文作者
论文摘要
KIC 5773205是在{\ it kepler}任务检测到的Eclips eclips binaries的Villanova目录中发现的最不发光的M矮人。我们处理并分析了该恒星的三个可用任务数据季度，并发现了一段时期的光曲线的持续定期变化，这是对轨道时期的确切4：5的可相当性。考虑了三种解释途径：1）在特定的特征频率下潮汐相互作用激发的非拉迪脉动； 2）由潮汐引起的高阶自旋轨道共振； 3）在平均运动共振中由外轨道伴侣引起的椭圆形变形。这三个解释都遇到了相当大的困难，但是可用的事实似乎有利于潮汐驱动的脉动场景。恒星可能代表一种新型的心跳二进制，其潮汐激发搏动接近轨道运动的频率。
KIC 5773205 is the least luminous eclipsing M dwarf found in the Villanova catalog of eclipsing binaries detected by the {\it Kepler} mission. We processed and analyzed the three available quarters of mission data for this star and discovered a persistent periodic variation of the light curve with a period, which is in exact 4:5 commensurability to the orbital period. Three routes of interpretation are considered: 1) non-radial pulsations excited by the tidal interaction at a specific eigenfrequency; 2) a high-order spin-orbit resonance caused by the tides; 3) an ellipsoidal deformation caused by an outer orbiting companion in a mean motion resonance. All three explanations meet considerable difficulties, but the available facts seem to favor the tidally driven pulsation scenario. The star may represent a new type of heartbeat binary with tidally excited pulsations that are close to the orbital motion in frequency.
