3 papers
astro-ph.EP2026
Quantifying Building Blocks of Life in Planetary Analog Materials: Implications for Prebiotic Chemistry and Biosignature Identification
Xiaoou Luo, Chao He, Zhengbo Yang +5
Building blocks of life such as amino acids, nucleobases, and fatty acids are central to prebiotic chemistry and represent key targets in the search for planetary biosignatures. In…
astro-ph.EP2025
The impact of organic hazes and graphite on the observation of CO2-rich sub-Neptune atmospheres
Haixin Li, Chao He, Sai Wang +9
Many sub-Neptune and super-Earth exoplanets are expected to develop metal-enriched atmospheres due to atmospheric loss processes such as photoevaporation or core-powered mass loss.…
astro-ph.EP2025
Formation of organic hazes in CO-rich sub-Neptune atmospheres within the graphite-stability regime
Sai Wang, Zhengbo Yang, Chao He +10
Super-Earths and sub-Neptunes are the most common exoplanets, with a "radius valley" suggesting that super-Earths may form by shedding sub-Neptunes' gaseous envelopes. Exoplanets t…