Our conclusion is that we happened to observe an intensive short time-scale activity of the chromosphere of Arcturus characterized by mass outflow and outward motions of circumstellar matter.

• 分析认为我们观测到的是大角星的一次以天计的短时标色球剧烈活动，它伴随着物质的向外抛射，也引起星周物质的向外运动。