论文标题
外部表征的信息范围方法
An Informational-Entropic Approach to Exoplanet Characterization
论文作者
论文摘要
过去，外部行星的````地球'''尺寸是定性的，被认为是非生物地球，或者是哪些参数使地球状地球样的措施。随着高分辨率系外行星光谱的出现，越来越需要一种量化行星的地球风格的方法，该方法在利用现代望远镜任务可用的数据时解决了这些问题。在这项工作中，我们引入了一个信息 - 渗透指标，该指标利用系外行星的光谱直接量化了地球的类似地球。为了说明我们的方法，我们生成了一系列类似地球和超级矿物质的模拟传输光谱，以及一个exojupiter和几个气体巨型系外行星。作为概念证明，我们演示了信息指标评估行星与地球的相似程度的能力，从而使其成为寻找候选地球2.0的强大工具。
In the past, measures of ``Earth-likeness'' of exoplanets have been qualitative, considered an abiotic Earth, or required discretionary choices of what parameters make a planet Earth-like. With the advent of high-resolution exoplanet spectroscopy, there is a growing need for a method of quantifying the Earth-likeness of a planet that addresses these issues while making use of the data available from modern telescope missions. In this work, we introduce an informational-entropic metric that makes use of the spectrum of an exoplanet to directly quantify how Earth-like the planet is. To illustrate our method, we generate simulated transmission spectra of a series of Earth-like and super-Earth exoplanets, as well as an exoJupiter and several gas giant exoplanets. As a proof of concept, we demonstrate the ability of the information metric to evaluate how similar a planet is to Earth, making it a powerful tool in the search for a candidate Earth 2.0.
