Models of Activity Cycles of Chromospherically-Active Binary Stars

现在人们认为，许多表面温度与太阳相似或更低的恒星具有类似于太阳11年周期的磁活动周期。一组这样的恒星是所谓的RS CVn恒星，它们的活跃区域被认为与冷的圆形星斑区域有关。首席调查员(PI)建议使用档案和新获得的光度学数据来调查日食RS CVN星。目标是确定这些恒星活动区的大小和位置的长期趋势是否会揭示类似于太阳周期的磁活动周期。此外，PI建议确定恒星斑点区域相对于其光球的温度。

It is now believed that many stars with surface temperatures like the sun's and less have magnetic activity cycles similar to the 11-year cycle of the sun. One group of such stars are the so-called RS CVn stars, whose active regions are thought to be associated with cool, circular starspot regions. The Principal Investigator (PI) proposes to use archival and newly obtained photometric data for the investigation of eclipsing RS CVn stars. The goal is to determine whether the long-term trends in sizes and locations of the active regions of these stars will reveal magnetic activity cycles similar to the solar cycle. In addition, the PI proposes to determine the temperature of the stars' spotted regions relative to their photospheres.