Bioverse: A Simulation Framework to Assess the Statistical Power of Future Biosignature Surveys
Bioverse: A Simulation Framework to Assess the Statistical Power of Future Biosignature Surveys
复制标题
Bioverse：评估未来生物特征调查统计能力的模拟框架
DOI：
10.3847/1538-3881/abe042
复制
发表时间：
2021
期刊：
影响因子：
--
通讯作者：
D. Apai
中科院分区：
文献类型：
--
作者：
A. Bixel;D. Apai
下一代太空观测站将首次对类地系外行星的大气层进行系统调查，并寻找地球外生命的证据。虽然对最近的可居住世界的深入观察可能会产生诱人的结果，但关于行星可居住性和进化的基本问题只能通过对数十到数百个类地行星的人口水平研究来回答。为了确定下一代天文台的需求来解决这些问题，我们开发了Bioverse。Bioverse将现有的系外行星统计知识与调查模拟和假设检验框架相结合，以确定拟议的天基直接成像和透射光谱调查是否能够探测到类地系外行星属性之间的各种假设统计关系。根据代码的描述，我们应用Bioverse来确定雄心勃勃的直接成像或过境调查是否能够确定星周宜居带的范围并研究类地行星的演化。鉴于最近的证据表明，地球大小的宜居带行星可能比以前认为的要少得多，我们发现，有必要进行大量搜索的太空任务，以研究地球和宜居世界的数量。展望未来，Bioverse提供了一种方法，用于对未来观测概念进行贸易研究，以最大限度地提高其解决人口水平问题的能力，包括并超越本文探讨的具体示例。
Next-generation space observatories will conduct the first systematic surveys of terrestrial exoplanet atmospheres and search for evidence of life beyond Earth. While in-depth observations of the nearest habitable worlds may yield enticing results, there are fundamental questions about planetary habitability and evolution that can only be answered through population-level studies of dozens to hundreds of terrestrial planets. To determine the requirements for next-generation observatories to address these questions, we have developed Bioverse. Bioverse combines existing knowledge of exoplanet statistics with a survey simulation and hypothesis testing framework to determine whether proposed space-based direct imaging and transit-spectroscopy surveys will be capable of detecting various hypothetical statistical relationships between the properties of terrestrial exoplanets. Following a description of the code, we apply Bioverse to determine whether an ambitious direct imaging or transit survey would be able to determine the extent of the circumstellar habitable zone and study the evolution of Earth-like planets. Given recent evidence that Earth-sized habitable zone planets are likely much rarer than previously believed, we find that space missions with large search volumes will be necessary to study the population of terrestrial and habitable worlds. Moving forward, Bioverse provides a methodology for performing trade studies of future observatory concepts to maximize their ability to address population-level questions, including and beyond the specific examples explored here.
影响因子：
5.3
作者：
Bryson, Steve;Kunimoto, Michelle;Zamudio, Khadeejah A.
通讯作者：
Zamudio, Khadeejah A.