期刊
ASTRONOMY & ASTROPHYSICS
卷 619, 期 -, 页码 -出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361/201834251
关键词
stars: activity; stars: rotation; stars: oscillations; starspots; stars: solar-type; stars: individual: HD173701
资金
- NYU Abu Dhabi Institute [G1502]
- Danish National Research Foundation [DNRF106]
Stellar magnetic fields are poorly understood, but are known to be important for stellar evolution and exoplanet habitability. They drive stellar activity, which is the main observational constraint on theoretical models for magnetic field generation and evolution. Starspots are the main manifestation of the magnetic fields at the stellar surface. In this study we measured the variation in their latitude with time, called a butterfly diagram in the solar case, for the solar analogue HD173701 (KIC 8006161). To this end, we used Kepler data to combine starspot rotation rates at different epochs and the asteroseismically determined latitudinal variation in the stellar rotation rates. We observe a clear variation in the latitude of the starspots. It is the first time such a diagram has been constructed using asteroseismic data.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据