Ariel-IT: 5th national meeting on Ariel science

Session

Planetary atmospheres

7 May 2026, 09:00

Fuligno Cenacle

27. Unlocking exoplanetary atmospheres through the synergy of High- and Low-Resolution Spectroscopy

Gloria Guilluy (Istituto Nazionale di Astrofisica (INAF))

07/05/2026, 09:00

Since the first detection of an exoplanet in 1995, the field has undergone a huge transformation, shifting the focus from planetary detection to detailed atmospheric characterisation. Ground- and space-based observatories have revealed a stunning diversity in planetary masses, radii, and orbital architectures, and exoplanetary atmospheres now hold the key to understanding the origin of this...

23. Oxygen partitioning in gas giant atmospheres through the lens of chemical kinetics

Paolo Matteo Simonetti (Istituto Nazionale di Astrofisica (INAF))

07/05/2026, 09:25

Oxygen is a reactive element that bonds not only to C and H, but also to a variety of other relatively abundant elements like Si, Mg and Fe. How much of this element we miss when we fail to account for species other than H2O and CO has yet to be fully determined within the framework of disequilibrium chemistry. The fate of oxygen is determined by the delicate balance between competing...

19. A Summary of the End to End Experiment Exoplanetary Atmospheres

Dr Mattia Claudio D'Arpa (INAF)

07/05/2026, 09:50

We present a systematic review of the reported detections and non-detections of chemical species, both atomic and molecular, in the atmospheres of the End to End experiment selected sample of exoplanets, obtained employing ExoAtmospheres database to access the studies on atmospheric characterisation. The analyzed sample covers a broad equilibrium temperature range, spanning from 700 K for...

18. Beyond Equilibrium: Photochemistry and Transport Signatures in Exoplanet Infrared Spectra

Dr Tomás De Azevedo Silva (Osservatorio Astrofisico di Arcetri - INAF)

07/05/2026, 10:10

The ARIEL space mission will characterize the atmospheres of hundreds of exoplanets, pushing beyond the canonical hot Jupiters into cooler regimes where longer chemical timescales amplify the roles of transport and photochemistry. In these atmospheres, disequilibrium processes are expected to leave measurable imprints on molecules central to ARIEL's science case, such as H2O, CO2, and CH4,...