[astro-ph.EP] Atmospheric photochemical models incorporating the impacts of stellar flares often assume a ∼9,000 K spectrum at ultraviolet-optical wavelengths.
Earth-like atmosphere
![Vertical profiles of temperature and volume mixing ratios for the species included in our atmospheric model, simulated for TRAPPIST-1 e. The profile behavior follows from the equations and assumptions described in Section 2.2. -- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/07/Biosignature-Detectability.png?resize=1200%2C720&ssl=1)
Posted inBiosignatures & Paleobiology
Biosignature Detectability On Transiting Habitable Worlds With ELT/ANDES
[astro-ph.EP] The search for life beyond the Solar System is at a turning point, transitioning from theoretical predictions to observations enabled by next-generation observatories.
Posted inAtmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Lava / magma ocean / Volcanic Worlds, Status Report
An Atmosphere On The Ultra-Short Period Super-Earth HD 3167 b
‘Lava worlds’-Earth-sized planets hot enough (Teq >~ 1100 K) to melt their dayside silicate surfaces-have emerged as promising candidates for atmospheric detection and characterization. Thermal emission observations show an apparent […]
Posted inAtmospheres, Climate, Weather, Exoplanets, -moons, -comets, Habitable Zones, Status Report, TRAPPIST-1, Water/Hycean Worlds & Oceanography
A New Convection Scheme For GCMs Of Temperate Sub-Neptunes
Atmospheric characterisation of temperate sub-Neptunes is the new frontier of exoplanetary science with recent JWST observations of possible Hycean world K2-18b.
Posted inAstrochemistry, Astrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Icy Worlds, Status Report
A One-Dimensional Energy Balance Model Parameterization for the Formation of CO2 Ice on the Surfaces of Eccentric Extrasolar Planets
Eccentric planets may spend a significant portion of their orbits at large distances from their host stars, where low temperatures can cause atmospheric CO2 to condense out onto the surface, […]