Stellar and Solar Magnetic Activity Cycles

太阳-恒星摄谱仪计划的延续为研究人员的研究提供了一个新的范式：将恒星作为太阳来观察，而不是将太阳作为星星来观察。 虽然色球诊断继续在分析中发挥不可或缺的作用，但研究人员已经意识到，来自“安静”太阳和恒星的光谱线有可能显着改变长期太阳和恒星变化的研究方式。 因此，他们使用光谱的全部内容来追求对几个重要问题的更深入的理解;即：（1）太阳和太阳类似恒星的相对变化，（2）“蒙德极小”恒星的性质，（3）安静和活动线对不同时间尺度变化的响应，以及（4）使用这些数据作为即将到来的活动的预测。

This continuation of the Solar-Stellar Spectrograph Program incorporates a new paradigm to the investigators' research: observing the stars as a sun, rather than the sun as a star. While chromospheric diagnostics continue to play an integral part in analysis, the investigators have realized spectral lines originating from the 'quiet' Sun and stars have potential to significantly alter the way long-term solar and stellar variability is studied. Thus, they use the full content of spectra to pursue a deeper understanding of several important issues; namely, (1) relative variability of the Sun and solar-analogous stars, (2) nature of 'Maunder Minimum' stars, (3) response of quiet and active lines to variability on different timescales, and (4) using these data as predictors of upcoming activity.