Rotation of solar‐like stars in the immediate solar neighborhood

Rotation of solar‐like stars in the immediate solar neighborhood
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太阳附近的类太阳恒星的旋转

DOI:
10.1002/asna.202013790
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发表时间:
2020
影响因子:
0.9
通讯作者:
Mittag
Mittag
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Schmitt;J. H. M. M;Mittag

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尽管 CoRoT 或开普勒等光度空间任务在过去十年中对数千颗晚型恒星进行了旋转测量,但这些任务仍未检测到大部分 G 星群的旋转特性。从太阳(当被视为恒星时)来看,我们知道,在对恒星上的斑块区域非常敏感的波长区域中,紫外线中的旋转测量是最有希望的或更一般的测量。因此,“经典”S指数,即Ca II H&K线核心发射的强度,仍然是最可行的活动和旋转指标,并且借助机器人光谱望远镜,可以高效且经济地进行此类监测测量。我们在直接太阳环境中定义了完整的太阳恒星体积限制样本,并在 Ca II H&K 中进行了当前周期测量,这两个样本均来自威尔逊山档案数据和我们的机器人 TIGRE 设施获得的新数据。
Although photometric space‐based missions such as CoRoT orKeplerhave yielded rotation measurements of many thousands of late‐type stars during the last decade, the rotational properties of the bulk of the G star population remain undetected by these missions. From the Sun (when viewed as a star), we know that rotation measurements in the ultraviolet are the most promising, or more general, measurements in wavelength regions very sensitive to plage areas on the stars. Therefore, the “classical” S‐index, that is, the strength of the Ca II H&K line core emission, is still the most viable activity and rotation indicator, and with robotic spectroscopy telescopes, such monitoring measurements can be carried out efficiently and economically. We define a complete volume‐limited sample of solar stars in the immediate solar environment and present period measurements in Ca II H&K, both from archival Mount Wilson data and new data obtained with our robotic TIGRE facility.
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