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首页> 外文期刊>The Astrophysical Journal. Letters >A Statistical Comparative Planetology Approach to the Hunt for Habitable Exoplanets and Life Beyond the Solar System
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A Statistical Comparative Planetology Approach to the Hunt for Habitable Exoplanets and Life Beyond the Solar System

机译：在太阳系超出太阳系之外，追捕居住的产卵和生活的统计比较行星学方法

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摘要

The search for habitable exoplanets and life beyond the solar system is one of the most compelling scientific opportunities of our time. Nevertheless, the high cost of building facilities that can address this topic and the keen public interest in the results of such research requires rigorous development of experiments that can deliver a definitive advancement in our understanding. Most work to date in this area has focused on a "systems science" approach of obtaining and interpreting comprehensive data for individual planets to make statements about their habitability and the possibility that they harbor life. This strategy is challenging because of the diversity of exoplanets, both observed and expected, and the limited information that can be obtained with astronomical instruments. Here, we propose a complementary approach that is based on performing surveys of key planetary characteristics and using statistical marginalization to answer broader questions than can be addressed with a small sample of objects. The fundamental principle of this comparative planetology approach is maximizing what can be learned from each type of measurement by applying it widely rather than requiring that multiple kinds of observations be brought to bear on a single object. As a proof of concept, we outline a survey of terrestrial exoplanet atmospheric water and carbon dioxide abundances that would test the habitable zone hypothesis and lead to a deeper understanding of the frequency of habitable planets. We also discuss ideas for additional surveys that could be developed to test other foundational hypotheses is this area.
机译：寻找可居住的外产品和超越太阳系的生活是我们最令人信服的科学机遇之一。尽管如此，可以解决这一主题的建筑设施的高成本和对这些研究结果的敏锐的公共利益需要严格地发展实验，这可以提供我们理解的最终进步。大多数迄今为止在这一领域的工作侧重于“系统科学”方法，以便获得和解释各个行星的综合数据，以对其居住地发表陈述以及他们留下生活的可能性。这种策略是具有挑战性的，因为出产的多样性，都观察到和预期，以及通过天文仪器可以获得的有限信息。在这里，我们提出了一种互补方法，该方法是基于对关键行星特征的调查，并使用统计边缘化来回答更广泛的问题，而不是用小物体样本来解决。这种比较的地图学方法的基本原理通过广泛应用，而不是要求在单个物体上承受多种观察来最大限度地利用每种类型的测量来了解。作为概念的证据，我们概述了对陆地外部的大气水和二氧化碳丰富的调查，这些丰富会测试可居住的区域假设，并导致对可居住行星频率的更深入了解。我们还讨论了可以开发用于测试其他基础假设的额外调查的想法是该领域。

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