Daniel Fischer on Nostr: No thick carbon dioxide atmosphere on the rocky exoplanet TRAPPIST-1 c: ...

No thick carbon dioxide atmosphere on the rocky exoplanet TRAPPIST-1 c: https://www.nature.com/articles/s41586-023-06232-z -> "we report the detection of thermal emission from the dayside of #TRAPPIST-1 c with [MIRI on the] #JWST at 15 µm. We measure a planet-to-star flux ratio of fp/f⁎ = 421 ± 94 parts per million (ppm), which corresponds to an inferred dayside brightness temperature of 380 ± 31 K. This high dayside temperature disfavours a thick, CO2-rich #atmosphere on the planet" -> https://webbtelescope.org/contents/news-releases/2023/news-2023-125