The Solar Neighborhood. XLI. A Study of the Wide Main Sequence for M Dwarfs—Long-term Photometric Variability

The Solar Neighborhood. XLI. A Study of the Wide Main Sequence for M Dwarfs—Long-term Photometric Variability
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太阳邻域 XLI。M 矮星宽主序的研究——长期光度变化

DOI:
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发表时间:
2017
期刊:
影响因子:
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通讯作者:
A. Riedel
A. Riedel
中科院分区:
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文献类型:
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作者:
Tiffany D. Clements;T. Henry;Altonio D. Hosey;W. Jao;M. Silverstein;J. Winters;S. Dieterich;A. Riedel

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我们报告了在托洛洛山美洲天文台的 SMARTS 0.9 m 望远镜上进行的 M 矮星长期光度变异性研究的结果。作为研究赫罗图上给定颜色的 M 矮星光度范围的多方面努力的一部分,在约翰逊-克朗-考辛斯 V 波段中对 76 M 矮星进行了 3-17 年的观测。我们发现,高于主序分布中心的恒星往往比中心以下较暗的恒星具有更高水平的变异性,这可能是由磁活动引起的。这项研究深入了解了这些恒星的长期磁活动如何影响它们的大小、光度以及赫罗图上的位置。
We report findings from a long-term photometric variability study of M dwarfs carried out at the SMARTS 0.9 m telescope at the Cerro Tololo Inter-American Observatory. As part of a multi-faceted effort to investigate the range of luminosities of M dwarfs of a given color on the Hertzsprung–Russell Diagram, 76 M dwarfs have been observed for 3–17 years in the Johnson–Kron–Cousins V band. We find that stars elevated above the center of the main sequence distribution tend to have higher levels of variability, likely caused by magnetic activity, than their fainter counterparts below the center. This study provides insight into how the long-term magnetic activity of these stars may be affecting their sizes, luminosities, and thus positions on the H-R Diagram.
DOI: 10.1088/0004-6256/149/1/5
发表时间: 2014
期刊: The Astronomical Journal
影响因子: --
作者:
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通讯作者: Winters J
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