利用詹姆斯·韦布空间望远镜探索系外行星大气
Exploration of Exoplanet Atmospheres with the James Webb Space Telescope
- University of Exeter(埃克塞特大学)
- Johns Hopkins University(约翰斯·霍普金斯大学)
机构由 AI 辅助整理,请以论文原文为准。
中文总结 AI 辅助
本研究介绍詹姆斯·韦布空间望远镜凭借独特的观测能力,在20至25年任务寿命中开展约10^4小时系外行星大气观测,以表征不同类型系外行星大气并评估岩质行星宜居可能性。
中文摘要 AI 辅助
詹姆斯·韦布空间望远镜(JWST)为凌日行星和直接成像系外行星的研究提供了变革性的表征能力。其在红外波段的深场观测,包括光谱观测和日冕仪成像,意味着JWST对决定系外行星大气属性的大多数物理过程具有独特的敏感性。该望远镜的热稳定性和指向稳定性直接转化为凌日系外行星测光所需的极高测光精度,以及高灵敏度的日冕仪观测。在20至25年的任务寿命中,约10^4小时将用于系外行星大气观测,形成的遗留数据档案将支持对类地行星、亚海王星和气态巨行星的系外行星大气进行种群水平的表征,同时评估岩质行星大气的普遍性,进而判断这类行星具备宜居条件的程度。
英文摘要
The James Webb Space Telescope (JWST) is providing transformative characterization capabilities for the study of both transiting and directly imaged extrasolar planets. Observations deep into the infrared in the form of both spectroscopy and coronagraphic imaging means that JWST is uniquely sensitive to most of the physical processes that dictate the properties of exoplanetary atmospheres. The observatory's thermal and pointing stability directly translates into the extreme photometric precision needed for exquisite transiting exoplanet photometry, as well as highly sensitive coronagraphic observations. Over the mission's 20-25 year lifetime, roughly 10$^4$ hours will be dedicated to observations of exoplanet atmospheres, providing a legacy data archive that will allow population-level characterization of exoplanet atmospheres spanning terrestrial planets, sub-Neptunes and gas giants. This effort will also assess the prevalence of atmospheres of rocky planets and thus the degree to which such planets may have conditions conducive to habitability.