ISS Ca II K参数测定方法的改进
Improvements in the determination of ISS Ca II K parameters
摘要：
电离Ca II K线的测量是长期研究太阳和恒星活动的主要资源之一。它们还在与太阳辐照度变化有关的许多研究中发挥关键作用，特别是作为地面代用指标，模拟可能影响地球气候的太阳紫外线通量变化。100多年来，各种天文台都可以获得太阳在Ca II K中的完整圆盘图像，而在Ca II K中进行的太阳作为恒星的天气观测始于20世纪70年代初。其中一个仪器，综合太阳光谱仪（ISS）自2006年底以来一直在基特峰（亚利桑那州）运行。国际空间站每天在9个光谱波段观测太阳光谱，包括Ca II K和H线。我们描述了最近的改进，在数据减少钙II K观测，目前的时间变化的9个参数来自这条谱线的配置文件。
英文摘要：
Measurements of the ionized Ca II K line are one of the major resources for long-term studies of solar and stellar activity. They also play a critical role in many studies related to solar irradiance variability, particularly as a ground-based proxy to model the solar ultraviolet flux variation that may influence the Earth's climate. Full disk images of the Sun in Ca II K have been available from various observatories for more than 100 years and latter synoptic Sun-as-a-star observations in Ca II K began in the early 1970s. One of these instruments, the Integrated Sunlight Spectrometer (ISS) has been in operation at Kitt Peak (Arizona) since late 2006. The ISS takes daily observations of solar spectra in nine spectra bands, including the Ca II K and H line s. We describe recent improvements in data reduction of Ca II K observations, and present time variations of nine parameters derived from the profile of this spectral line.
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