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arXiv 1802.02102astro-ph.SR
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M矮星的CARMENES输入目录:III。高分辨率光谱观测的自转和活动

CARMENES input catalogue of M dwarfs: III. Rotation and activity from high-resolution spectroscopic observations

S. V. Jeffers, P. Schoefer, A. Lamert, A. Reiners, D. Montes, J. A. Caballero, M. Cortes-Contreras, C. J. Marvin, V. M. Passegger, M. Zechmeister, A. Quirrenbac… 展开作者

S. V. Jeffers, P. Schoefer, A. Lamert, A. Reiners, D. Montes, J. A. Caballero, M. Cortes-Contreras, C. J. Marvin, V. M. Passegger, M. Zechmeister, A. Quirrenbach, F. J. Alonso-Floriano, P. J. Amado, F. F. Bauer, E. Casal, E. Diez Alonso, E. Herrero, J. C. Morales, R. Mundt, I. Ribas, L. F. Sarmiento

摘要:

CARMENES是一台用于对M矮星进行径向速度测量的摄谱仪,目的是探测在其宿主恒星的宜居带内轨道运行的地球质量行星。为了确保最佳使用的CARMENES保证时间观测,在本文中,我们调查的活动和旋转的相关性约2200 M矮星,范围从M0.0 V到M9.0 V的光谱类型。我们提出了新的高分辨率光谱观测与FEROS,CAFE,HRS约500 M矮星。对于每一个新的观测,我们确定了它的径向速度,并测量了它的Halpha活动指数和旋转速度。此外,我们对许多恒星进行了多次观测,以调查是否存在由于多重性而导致的径向速度变化。我们的调查结果证实,早M矮星是H α不活跃的低旋转速度和晚M矮星是H α活动的非常高的旋转速度。这种高分辨率分析的结果包括目前可用的M矮星旋转和活动的最广泛的目录。

英文摘要:

CARMENES is a spectrograph for radial velocity surveys of M dwarfs with the aim of detecting Earth-mass planets orbiting in the habitable zones of their host stars. To ensure an optimal use of the CARMENES Guaranteed Time Observations, in this paper we investigate the correlation of activity and rotation for approximately 2200 M dwarfs, ranging in spectral type from M0.0 V to M9.0 V. We present new high-resolution spectroscopic observations with FEROS, CAFE, and HRS of approximately 500 M dwarfs. For each new observation, we determined its radial velocity and measured its Halpha activity index and its rotation velocity. Additionally, we have multiple observations of many stars to investigate if there are any radial velocity variations due to multiplicity. The results of our survey confirm that early-M dwarfs are Halpha inactive with low rotational velocities and that late-M dwarfs are Halpha active with very high rotational velocities. The results of this high-resolution analysis comprise the most extensive catalogue of rotation and activity in M dwarfs currently available.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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