论文标题
太阳比其他太阳能恒星不那么活跃
The Sun is less active than other solar-like stars
论文作者
论文摘要
太阳和其他恒星的磁活动会导致它们的亮度变化。我们研究了太阳的可变性与其他太阳能恒星的典型变化，即具有近极有效温度和旋转周期的恒星。通过将开普勒空间望远镜的四年光度观测与盖亚航天器的星体数据相结合，我们测量了369个太阳能恒星的光度变化。大多数具有明确旋转周期的太阳能恒星比太阳更高，因此具有更大的活性。这些恒星看起来与太阳几乎相同，除了它们的较高可变性。它们的存在提出了一个问题，即太阳是否也可以体验到如此高的变异性时代。
Magnetic activity of the Sun and other stars causes their brightness to vary. We investigate how typical the Sun's variability is compared to other solar-like stars, i.e. those with near-solar effective temperatures and rotation periods. By combining four years of photometric observations from the Kepler space telescope with astrometric data from the Gaia spacecraft, we measure photometric variabilities of 369 solar-like stars. Most of the solar-like stars with well-determined rotation periods show higher variability than the Sun and are therefore considerably more active. These stars appear nearly identical to the Sun, except for their higher variability. Their existence raises the question of whether the Sun can also experience epochs of such high variability.
