FRECKLL Archives - Astrobiology

Transit spectra of the best fit non-equilibrium 1D model at resolution 200 (black solid line). This is the approximate best fit on the simulated grid of metallicity, C/O and Kzz. Values are respectively 280.7, 90.0 and 106 cm2 .s−1 . It is compare to K2-18 b observation (Madhusudhan et al. 2023) low resolution representation with an offset of -41ppm between NIRISS and NIRSpec data. The contributions of considered molecules are represented with shaded colors. -- astro-ph.EP

Astronomy & Telescopes, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Gaia - Planetary Perspectives, Habitable Zones, Imaging & Spectroscopy, Press Release

Unraveling The Non-equilibrium Chemistry Of The Temperate Sub-Neptune K2-18 b

by Keith CowingJuly 22, 2025July 22, 2025

The search for habitable, Earth-like exoplanets faces major observational challenges due to their small size and faint signals.

Astrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Gas Giants, Imaging & Spectroscopy, Status Report

Re-analysis of 10 Hot-Jupiter Atmospheres With Disequilibrium Chemistry Retrieval

by Keith CowingJune 20, 2025June 20, 2025

Constraining the chemical structure of exoplanetary atmospheres is pivotal for interpreting spectroscopic data and understanding planetary evolution.