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arXiv 1707.04594astro-ph.EP
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潮汐对系外行星生命的影响

Implications of tides for life on exoplanets

Manasvi Lingam, Abraham Loeb

摘要:

从比邻星和TRAPPIST-1的例子中可以明显看出,在低质量恒星的宜居带中,地球大小的行星是常见的。在这里,我们专注于这样的行星系,并认为他们的(海洋)潮汐可能会更加突出,由于更强的潮汐力。我们确定的条件下,潮汐可能会产生显着的积极影响的生物过程,包括非生物发生,生物节律,营养物质上涌和刺激光合作用。我们总结了我们的分析与识别大规模的藻类水华作为潜在的时间生物特征反射光变曲线,可以间接产生的结果,强大的潮汐力。

英文摘要:

As evident from the nearby examples of Proxima Centauri and TRAPPIST-1, Earth-sized planets in the habitable zone of low-mass stars are common. Here, we focus on such planetary systems and argue that their (oceanic) tides could be more prominent due to stronger tidal forces. We identify the conditions under which tides may exert a significant positive influence on biotic processes including abiogenesis, biological rhythms, nutrient upwelling and stimulating photosynthesis. We conclude our analysis with the identification of large-scale algal blooms as potential temporal biosignatures in reflectance light curves that can arise indirectly as a consequence of strong tidal forces.

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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