arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1807.09504astro-ph.EP
收藏

一个更全面的宜居带,用于在其他行星上寻找生命

A more comprehensive habitable zone for finding life on other planets

Ramses M. Ramirez

摘要:

宜居带(HZ)是围绕恒星的圆形区域,在那里,岩石行星的表面可能存在水体。空间任务使用HZ来选择有希望的目标进行后续的可居住性评估。经典的HZ定义假设,对于绕主序星运行的宜居行星来说,最重要的温室气体是CO2和H2O。虽然经典的HZ是一种有效的导航工具,但最近的HZ公式表明,它不能完全捕获可居住系外行星的多样性。在这里,我回顾了经典和较新的HZ配方中考虑的行星和恒星的过程。用这些新的公式补充经典的HZ,提高了我们过滤掉不太可能有生命的世界的能力。这种改进的HZ工具对于当前和即将到来的旨在探测和表征潜在宜居系外行星的任务是必要的。

英文摘要:

The habitable zone (HZ) is the circular region around a star(s) where standing bodies of water could exist on the surface of a rocky planet. Space missions employ the HZ to select promising targets for follow-up habitability assessment. The classical HZ definition assumes that the most important greenhouse gases for habitable planets orbiting main-sequence stars are CO2 and H2O. Although the classical HZ is an effective navigational tool, recent HZ formulations demonstrate that it cannot thoroughly capture the diversity of habitable exoplanets. Here, I review the planetary and stellar processes considered in both classical and newer HZ formulations. Supplementing the classical HZ with additional considerations from these newer formulations improves our capability to filter out worlds that are unlikely to host life. Such improved HZ tools will be necessary for current and upcoming missions aiming to detect and characterize potentially habitable exoplanets.

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。

↑