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arXiv 2203.06259astro-ph.EPastro-ph.SR
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连续的宜居带:使用贝叶斯方法优先确定潜在宜居世界的特征

Continuous Habitable Zones: Using Bayesian Methods to Prioritize Characterization of Potentially Habitable Worlds

Austin Ware, Patrick Young, Amanda Truitt, Alexander Spacek

摘要:

潜在宜居行星的数量继续增加,但我们缺乏时间和资源来描述所有这些行星的特征。随着$\sim$ 30个已知的潜在可居住行星以及越来越多的候选和确认行星,需要一个强大的统计框架来优先描述这些行星。使用$\sim$ 2戈瑞,它采取了地球上的生命,使一个可检测的影响大气作为基准,我们使用贝叶斯统计方法来确定的概率,一个给定的半径周围的恒星已连续居住2戈瑞。我们进行这种分析的9个潜在的宜居系外行星半径$<$ 1.8 R $_\oplus$和/或行星质量$<$ 10 M $_\oplus$周围的9个低质量的主机恒星($\sim$ 0.5-1.1 M $_\odot$)测量恒星质量和金属丰度,以及金星,地球和火星。通过分析产生了宿主恒星的年龄。该技术也被用来提供2768低质量恒星(0.5-1.3 M $_\odot$)在TESS连续观察区的年龄估计。

英文摘要:

The number of potentially habitable planets continues to increase, but we lack the time and resources to characterize all of them. With $\sim$30 known potentially habitable planets and an ever-growing number of candidate and confirmed planets, a robust statistical framework for prioritizing characterization of these planets is desirable. Using the $\sim$2 Gy it took life on Earth to make a detectable impact on the atmosphere as a benchmark, we use a Bayesian statistical method to determine the probability that a given radius around a star has been continuously habitable for 2 Gy. We perform this analysis on 9 potentially habitable exoplanets with planetary radii $<$1.8 R$_\oplus$ and/or planetary masses $<$10 M$_\oplus$ around 9 low-mass host stars ($\sim$0.5-1.1 M$_\odot$) with measured stellar mass and metallicity, as well as Venus, Earth, and Mars. Ages for the host stars are generated by the analysis. The technique is also used to provide age estimates for 2768 low-mass stars (0.5-1.3 M$_\odot$) in the TESS Continuous Viewing Zones.

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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