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arXiv 2408.15499astro-ph.SRastro-ph.EP
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行星对太阳和恒星周期性活动是否存在同步影响?

Is There a Synchronizing Influence of Planets on Solar and Stellar Cyclic Activity?

V. N. Obridko, M. M. Katsova, D. D. Sokoloff, N. V. Emelianov

AI总结:

本研究通过分析太阳型恒星及M矮星数据并计算行星引力作用,证实系外行星不影响恒星周期形成,且太阳系质心位移与120年太阳黑子数序列未同步。

摘要:

本工作继续研究恒星与其行星之间的长期活动联系。我们分析了此前考虑的二十多颗具有已识别周期的太阳型恒星的最新数据,并增加了对另外两颗太阳型G星和15颗带有行星的较冷M矮星长期变异性研究的成果。如果周期性活动由行星的强潮汐影响决定,那么恒星的周期持续时间应与行星的轨道公转周期同步。我们计算了行星对其母恒星的引力作用。所得结果证实了先前的结论,即系外行星不影响恒星周期的形成。我们考察了420年间太阳系质心相对于太阳中心位置的变化。将这些数据与作为太阳活动指数的最可靠的120年SSN(太阳黑子数)序列进行比较,结果表明它们并未同步。

英文摘要:

This work continues our research of connection between the long-term activity of stars and their planets. We analyze new data on the previously considered two dozen solar-type stars with identified cycles, adding the results of studying the long-term variability of two more solar-type G stars and 15 cooler M dwarfs with planets. If the cyclic activity is determined by a strong tidal influence of the planet, then the cycle duration of the star should be synchronized with the period of orbital revolution of the planet. We calculate the gravitational effect of planets on their parent stars. The results obtained confirm the earlier conclusion that exoplanets do not influence the formation of the stellar cycle. We examine the change in the position of the barycenter of the solar system relative to the center of the Sun over 420 years. A comparison of these data with the most reliable 120-year SSN (sunspot number) series as the index of solar activity has shown that they are not synchronized.

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