The Gaia Data Release 2 (DR2) supplied a catalog of 147,644 late‐type stars for which the analysis of the G‐band photometric time series allowed the detection of the rotation period and an estimate of the magnetic activity level. The Gaia DR3 will be based on photometric time series spanning a longer time interval and will allow the detection and characterization of about 1 million stars with magnetic activity. In the present work, we show how the Gaia data allows us to study variability phenomena connected to the stellar magnetic activity and occurs on very different timescales. We also show how the Gaia data, combined with long‐term photometric surveys such as all sky automated survey (ASAS), can be exploited to detect magnetic activity cycles.

中文翻译：

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Gaia对恒星磁活动的检测和表征

盖亚数据发布2（DR2）提供了147,644个晚型恒星的目录，通过对这些星的G波段光度时间序列进行分析，可以检测出自转周期并估算出磁活动水平。盖亚DR3将基于跨较长时间间隔的光度时间序列，并可以检测和表征约100万颗具有磁性的恒星。在当前的工作中，我们展示了Gaia数据如何使我们能够研究与恒星磁活动有关并在非常不同的时间尺度上发生的变异性现象。我们还展示了如何利用盖亚（Gaia）数据结合长期的光度学调查（例如全天空自动调查（ASAS））来检测磁活动周期。