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arXiv 1911.04441astro-ph.EP
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描述系外行星的宜居性

Characterizing Exoplanet Habitability

Ravi kumar Kopparapu, Eric T. Wolf, Victoria S. Meadows

摘要:

可居住性是衡量一个环境支持生命的潜力的一个指标,一个可居住的系外行星在其表面支持液态水。然而,一颗行星成功地在其表面保持液态水,是行星、恒星、行星系甚至银河系特征和过程之间复杂相互作用的最终结果,在行星的一生中发挥作用。在本章中,我们将描述我们现在如何确定哪些系外行星最有可能是类地行星,以及在不同假设和行星条件下帮助定义宜居带所需的研究。然后,我们超越了宜居带的概念,探索一个新的框架,着眼于更多的特征和过程,并提供一个全面的调查,他们对一个星球的能力,获得和保持随着时间的推移宜居。我们现在正在进入一个令人兴奋的地球系外行星大气特征的时代,描述行星组成和约束大气的初步观测已经在进行中,计划在不久的将来和遥远的将来提供更强大的观测能力。了解影响行星可居住性的过程将指导我们发现可居住的和可能有人居住的行星。

英文摘要:

Habitability is a measure of an environment's potential to support life, and a habitable exoplanet supports liquid water on its surface. However, a planet's success in maintaining liquid water on its surface is the end result of a complex set of interactions between planetary, stellar, planetary system and even Galactic characteristics and processes, operating over the planet's lifetime. In this chapter, we describe how we can now determine which exoplanets are most likely to be terrestrial, and the research needed to help define the habitable zone under different assumptions and planetary conditions. We then move beyond the habitable zone concept to explore a new framework that looks at far more characteristics and processes, and provide a comprehensive survey of their impacts on a planet's ability to acquire and maintain habitability over time. We are now entering an exciting era of terrestiral exoplanet atmospheric characterization, where initial observations to characterize planetary composition and constrain atmospheres is already underway, with more powerful observing capabilities planned for the near and far future. Understanding the processes that affect the habitability of a planet will guide us in discovering habitable, and potentially inhabited, planets.

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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