![Stellar age versus planet radius for all planets in the Mission Candidate Sample. Planets younger than 200 Myr are highlighted in blue. The four planets marked with a star represent promising young targets. -- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/09/Probing.png?resize=1200%2C717&ssl=1)
[astro-ph.EP] Over the past two decades, increasingly precise observations have revealed that exoplanet atmospheres are chemically diverse and often far from equilibrium, with processes such as vertical mixing, photochemistry, and […]
Ariel Mission
![Contribution of a flare to the observed spectrum on anM-dwarf using a BT-Settl model spectrum (Allard 2014) -- [astro-ph.SR]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/09/Stellar-flares.png?resize=1200%2C714&ssl=1)
Posted inAriel Mission
Stellar Flares With Ariel: Detection Prospects And Impacts On Exoplanet Spectroscopy
[astro-ph.SR] Stellar flares are important tracers of magnetic activity and can significantly influence the characterization of exoplanet host stars by introducing time-dependent astrophysical variability.
![Radial gas temperature maps for planets within the in-house 3D GCM framework. The panels illustrate equatorial slice plots of (Tgas, pgas) across three global temperature regimes: 800 K (left), 1600 K (center), and 2400 K (right). Host star types vary by row, descending from A-type to G-type and M-type stars [1] -- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/09/Faithful.png?resize=1200%2C717&ssl=1)
Posted inExoplanets, -moons, -comets
Faithful Neural Embeddings For 3D Exoplanet Climate Modeling
[astro-ph.EP] With the rapid advancement of telescopes like JWST and Ariel, there is an urgent need for efficient 3D climate models to interpret observations of exoplanet atmospheres.
Posted inExoplanets, -moons, -comets
The Metallicity Of Giant Exoplanets Around Low-mass Stars And How Ariel Can Help
[astro-ph.EP] Giant planets orbiting low-mass stars represent a unique population of giant planets that can be studied to constrain planet formation theory. Surveys of transiting giant exoplanets around M-dwarfs (GEMS) […]
Posted inAstrochemistry
Astrochemical Study of Early Embedded Discs
[astro-ph.SR] The question of how our planet was formed and, more generally, how a planetary system forms is fundamental and has been addressed in a broad range of research domains. […]
Posted inExoplanets, -moons, -comets
Radiatively Controlled Thermal Stability of High-Altitude Clouds in Exoplanetary Atmospheres
[astro-ph.EP] One of the most striking findings of exoplanetary science is the ubiquity of clouds. A conventional approach to infer the cloud compositions is to utilize the thermochemical equilibrium model […]
Posted inUncategorized
Machine Learning And Deep Learning For Exoplanet Detection And Atmospheric Characterization With JWST And The Upcoming Ariel Mission
[astro-ph.IM] The detection and atmospheric characterization of exoplanets have entered a new data-intensive era driven by the James Webb Space Telescope and the upcoming Ariel mission.
Posted inAriel Mission, Astronomy & Telescopes, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Brown Dwarfs, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report
Assessing Ariel’s Capabilities To Observe Free-floating Brown Dwarfs
The primary goal of the Ariel space telescope is to conduct the biggest spectroscopic survey of transiting exoplanets to characterize their atmospheres and weather.
Posted inAriel Mission, Astronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Missions & Hardware, Status Report, Stellar Cartography
Ariel Stellar Characterisation IV. Fundamental Parameters Of 18 Hot Stars In The Ariel Mission Candidate Sample
The characterisation of exoplanetary systems depends on the accurate determination of host star parameters.
Posted inAI - Data - Apps - Cybernetics, Ariel Mission, Astronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report, Stellar Cartography
A Public Dataset Of Ariel Simulated Observations For Developing Exoplanetary Atmosphere Data Reduction Pipelines
Detecting and characterising exoplanet atmospheres remains challenging because atmospheric signals can be comparable to residual noise and instrumental/astrophysical systematics. Spectral features span from a few ppm for small planets up […]