Ariel-IT: 5th national meeting on Ariel science

Session

Planet formation and population synthesis

6 May 2026, 14:30

Fuligno Cenacle

8. From Discs to Planets: How Planet Formation Shapes Planetary Compositions

Elenia Pacetti (Istituto Nazionale di Astrofisica (INAF))

06/05/2026, 14:30

Connecting planetary atmospheric compositions to their formation environment has become a central challenge in exoplanet science. This link is shaped by the coupled chemical and dynamical evolution of protoplanetary discs, which determine the chemical makeup of the gas and solids accreted by growing planets. I present a new time-dependent framework that combines the long-term physical and...

21. The impact of stellar composition on planet formation by pebble accretion

Danai Polychroni (Istituto Nazionale di Astrofisica (INAF))

06/05/2026, 14:55

Pebble accretion process is known to be very sensitive to the initial conditions of the protoplanetary disc and a growing body of work is exploring its dependence on fundamental disc parameters (viscosity, mass, dust-to-gas). Notwithstanding this, the impact of the elemental set up of the disc, traced by the stellar composition, on the planetary occurrence rates and mass spectrum remains...

5. Constraining the impact of the disc environment on planet formation history through planet population synthesis

Sebastiano Ledda (Istituto Nazionale di Astrofisica (INAF))

06/05/2026, 15:20

Planet population synthesis models can only partially reproduce the observed population of planets in full. Such models implement different prescriptions for planet formation and disc evolution. We explore the impact of different disc models on the planet population they produce. We adopt two families of discs: the viscosity-driven and the MHD winds-driven model, in turn divided into steady...

24. OPAL and its Legacy: new tools and methodologies for the study of exoplanets and star-disk-planet connections

Diego Turrini (Istituto Nazionale di Astrofisica (INAF))

06/05/2026, 15:40

Current space observatories already allow for the spectral characterisation of exoplanetary atmospheres with a level of detail that exceeds what current retrieval and interpretation frameworks can reliably disentangle. The “Origins of Planets for ArieL” project addressed this challenge in preparation to the Ariel mission by creating, ab initio, an extensive physically-realistic library of...