Stellar and Solar Magnetic Activity Cycles

太阳-恒星光谱分析计划的继续为研究人员的研究引入了一种新的范式：将恒星作为太阳来观察，而不是将太阳作为恒星来观察。虽然色球诊断继续在分析中发挥着不可或缺的作用，但研究人员已经意识到，来自平静的太阳和恒星的谱线可能会显著改变研究太阳和恒星长期变异性的方式。因此，他们利用光谱的全部内容来寻求对几个重要问题的更深层次的理解；即(1)太阳和类似太阳的恒星的相对可变性，(2)“蒙德极小”恒星的性质，(3)平静和活动线对不同时间尺度上可变性的响应，以及(4)利用这些数据作为即将到来的活动的预测因子。

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.