Do We Know of Any Maunder Minimum Stars?
Do We Know of Any Maunder Minimum Stars?
复制标题
我们知道蒙德极小恒星吗？
DOI：
10.1086/423221
复制
发表时间：
2004
期刊：
影响因子：
--
通讯作者：
J. Wright
中科院分区：
文献类型：
--
作者：
J. Wright
大多数以前被认定为蒙德最小星的恒星都很老，是从主序星演化而来的。对加利福尼亚和卡内基行星搜索计划恒星和喜巴谷视差的活动测量结果的分析表明，年龄和色球活动之间的典型关系在根据威尔逊山s值计算活动时，对于年龄大于~ 6 Gyr的恒星来说，破坏了。仅比主序高1等的恒星表现出明显的抑制活动水平，这被误认为是蒙德最小行为的例子。
Most stars previously identified as Maunder minimum stars are old and evolved off the main sequence. Analysis of activity measurements from the California and Carnegie Planet Search program stars and Hipparcos parallaxes implies that the canonical relation between age and chromospheric activity breaks down for stars older than ∼6 Gyr when activity is calculated from Mount Wilson S-values. Stars only 1 mag above the main sequence exhibit significantly suppressed activity levels, which have been mistaken for examples of Maunder minimum behavior.