美国航天局的Webb望远镜绘制了Exoplanenet WASP-18b的极端热量图,揭示了5 000°F热点和冷却层边缘。 NASA’s Webb Telescope maps extreme heat on exoplanet WASP-18b, revealing a 5,000°F hotspot and cooler edges.

使用美国航天局詹姆斯·韦伯太空望远镜的天文学家们通过分析恒星日蚀后背面的星光变化,分析了超热木星外行星WASAP-18b的第一张3D温度图,从而创建了该星的首张3D温度图。 Astronomers using NASA’s James Webb Space Telescope have created the first 3D temperature map of exoplanet WASP-18b, an ultra-hot Jupiter, by analyzing starlight changes during its eclipse behind its host star. 通过JWST的NIRISS仪器应用的3D日蚀绘图技术揭示了地球日边的一个中心热点,温度超过5 000摄氏度,那里的水蒸气分解,并有一个更冷却的环环绕其边缘。 The 3D eclipse mapping technique, applied via JWST’s NIRISS instrument, revealed a central hotspot on the planet’s dayside with temperatures exceeding 5,000°F, where water vapor breaks down, and a cooler ring around its edges. 该方法利用红外波长探测多个大气层,标志着在研究外行星气候、天气和化学方面的一大进步,预计将适用于许多其他热木星。 The method, which probes multiple atmospheric layers using infrared wavelengths, marks a major advance in studying exoplanet climates, weather, and chemistry, and is expected to apply to many other hot Jupiters. 研究结果在10月28日《自然天文学》中发表。 The findings were published October 28 in Nature Astronomy.