论文标题
如何使用在低质量恒星周围的温带轨道上旋转的陆地行星观察的两个例子来测试行星宜居的关键概念
Two examples of how to use observations of terrestrial planets orbiting in temperate orbits around low mass stars to test key concepts of planetary habitability
论文作者
论文摘要
非常低的质量恒星周围温带轨道的陆地行星可能以与太阳系行星（尤其是地球）的方式相大的方式进化。但是，由于这些是第一个并且可以通过现有和即将到来的望远镜进行深入的气氛，云和表面特征的行星，因此我们需要制定最佳的观察策略，以最大程度地利用这些特征从这些特征中获得科学回报。在这里，我讨论并扩展了Bean等人的最新作品。 （2017）和Turbet等。 （2019年）表明，在非常低的质量恒星周围的温带轨道上绕的地面行星可能是一个极好的行星样本，可以测试该过程如何控制太阳系行星，尤其是地球的过程。位于宜居区域内外的行星密度或大气二氧化碳浓度的精确测量可用于测试统计的可居住性概念，例如硅酸盐 - 威的反馈，二氧化碳冷凝或失控的温室，这些反馈，二氧化碳或失控的温室已被确定为控制着维纳斯，火星和地球当前居住的关键过程。
Terrestrial planets in temperate orbits around very low mass stars are likely to have evolved in a very different way than solar system planets, and in particular Earth. However, because these are the first planets that are and will be accessible for in-depth atmosphere, clouds and surface characterizations with existing and forthcoming telescopes, we need to develop the best possible observational strategies to maximize the scientific return from these characterizations. Here I discuss and expand on the recent works of Bean et al. (2017) and Turbet et al. (2019) to show that terrestrial planets orbiting in temperate orbits around very low mass stars are potentially an excellent sample of planets to test how universal the processes thought to control the habitability of solar system planets and in particular Earth are. Precise measurements of density or atmospheric CO2 concentration for planets located both inside and outside the Habitable Zone could be used to statistically test habitability concepts such as the silicate-weathering feedback, CO2 condensation, or runaway greenhouse, which have been identified as key processes controlling the present and past habitability of Venus, Mars and Earth.
