具有射电辐射的食双星研究

在赫罗图上，不同类型的恒星都探测到射电辐射。恒星的射电辐射与恒星的物理参数、恒星活动以及恒星演化都密切相关。全面掌握恒星的物理性质需要光学和射电等波段的研究。恒星的光学和射电观测是研究恒星物理参数、磁活动、质量转移等物理过程的重要手段。近邻恒星射电耀发的探测已列为五百米口径球面射电望远镜（FAST）在调试阶段的早期科学项目之一。除射电观测，我们还打算利用国内外望远镜对具有射电辐射的食双星进行光学观测，获得其完整的光变曲线以及视向速度从而确定射电食双星的物理参数以及光学波段的性质；同时利用FAST的观测结果并收集其它射电望远镜的恒星射电辐射强度，从而探讨恒星射电辐射与其物理参数之间的关系、光学与射电波段相关性等。这不仅对研究射电食双星物理性质具有重要意义，也将为射电恒星的理论研究奠定坚实的观测基础。本课题将开创如何利用FAST开展射电恒星的研究，必将推动贵州省天文学科的发展。

Radio emission has been detected in all types of stars across the HR Diagram. Stellar radio radiation provide the most direct probes of physical processes including stellar parameters, magnetic activity, particle acceleration, and mass transport. It is necessary and important for the optical and radio observations to obtain the parameters of the eclipsing binaries. The detection of radio emission from nearby star is one of earlier scientific project of five hundred meter aperture spherical radio telescope (FAST). Beside radio observation, we also plan to make observations of the eclipsing binaries with radio radiation using domestic telescope to obtain their light curves and radial velocities. Then we determine their nature of the physical parameters of eclipsing binaries and optical properties. Moreover, we will use the FAST observation of radio stars, and plan to collect their properties in optical band and the radio radiation in order to detect the relation of the radio radiation and stellar physical parameters, and find the relationship of the properties between the two bands. The project is dedicated to reveal the nature of the eclipsing binaries with radio emission. It is crucial to study the theory of radio stars. More importantly, this project will open a radio window in stellar astrophysics. In special, it is very helpful for Guizhou astronomical research concerning the upcoming FAST era.