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Maria Tsantaki (Istituto Nazionale di Astrofisica (INAF))05/05/2026, 09:30
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Giovanna Tinetti (UCL)05/05/2026, 09:40
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Emanuele Pace (Università di Firenze)05/05/2026, 10:05
The ARIEL scientific payload has entered a key implementation phase in which subsystem development, integration readiness, and performance consolidation are central to mission progress. This presentation will provide an overview of the current status of the payload, with emphasis on the main subsystem architectures, development milestones, and ongoing activities toward qualification and...
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Valeria Cottini (ASI)05/05/2026, 10:30
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Andrea Lorenzani (Istituto Nazionale di Astrofisica (INAF))05/05/2026, 11:30
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Andrea Lorenzani (Istituto Nazionale di Astrofisica (INAF))05/05/2026, 11:50
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Giuseppina Micela (Istituto Nazionale di Astrofisica (INAF))05/05/2026, 12:10
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Monica Rainer (Istituto Nazionale di Astrofisica (INAF))05/05/2026, 12:40
To obtain precise and accurate information on the Ariel exoplanet host stars a wide variety of good quality data is needed. In particular, high SNR, high-resolution optical and near-infrared spectra are fundamental to derive homogeneous stellar parameters and abundances, that are crucial both to characterise the star and to better understand the exoplanetary information that will be obtained...
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Jesus Maldonado Prado (Istituto Nazionale di Astrofisica (INAF))05/05/2026, 14:30
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Maria Tsantaki (Istituto Nazionale di Astrofisica (INAF))05/05/2026, 14:55
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Katia Biazzo (INAF - Astronomical Observatory of Rome)05/05/2026, 15:15
Homogeneous and precise measurements of elemental abundances in planet-hosting Ariel targets are essential for accurately characterizing planetary properties and for providing key constraints on planet formation and evolution processes. In this talk, I will present results from the Elemental Abundance sub-working group of the Ariel Stellar Characterization Working Group, focusing on...
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Ronaldo Oliveira da Silva (Istituto Nazionale di Astrofisica (INAF))05/05/2026, 15:35
The derivation of elemental abundances for the stars belonging to the Ariel mission candidate sample is an ongoing task under the responsibility of the Stellar Characterisation Working Group. In da Silva et al. (2024), we published the first results regarding the abundances of carbon, nitrogen, and oxygen for a subsample of 181 FGK dwarf stars with stellar parameters (effective temperature,...
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Antonino Petralia (Istituto Nazionale di Astrofisica (INAF))06/05/2026, 09:30
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Dr Antonio Maggio06/05/2026, 09:55
X-ray and UV irradiation from stellar hosts is an important ingredient for modeling photochemistry and photoevaporation processes in exoplanetary atmospheres.
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In the framework of the Italian Ariel Dry-Run esperiment, we have characterized the high-energy emission of the stellar hosts in 8 selected exoplanetary systems.
We will present the results of this study, including predictions of the... -
Daniele Locci (Istituto Nazionale di Astrofisica (INAF))06/05/2026, 10:15
High-energy stellar radiation (extreme ultraviolet and X-rays, collectively XUV) plays a pivotal role in Star-Planet Interactions (SPI), profoundly shaping the chemical composition and evolution of exoplanetary atmospheres. In this work, we assess the capability of the Ariel space mission to detect spectral signatures resulting from XUV radiation. To this end, we employ cpzephyr, a newly...
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Daniele Locci (Istituto Nazionale di Astrofisica (INAF))06/05/2026, 10:40
The evolutionary history of exoplanetary atmospheres is inextricably linked to the activity of their host stars. High-energy stellar irradiation (XUV) and magnetic forces drive complex Star-Planet Interactions (SPI), profoundly altering atmospheric chemistry and driving atmospheric escape. In this talk, we explore these dynamic interactions. We will discuss how the combined effects of stellar...
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Gabriele Galletta (Istituto Nazionale di Astrofisica (INAF))06/05/2026, 11:30
The objective of this work is to investigate stellar flaring activity in the confirmed
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exoplanet host stars of the Ariel Mission Candidate Sample (MCS, July 2024 release), with
the aim of assessing flare probabilities during transit spectroscopy. From the 657 stars
included in the catalogue, we select a subsample of 290 nearby systems (d < 200 pc) with
available TESS light curves,... -
Ms Maria Messineo (Istituto Nazionale di Astrofisica (INAF))06/05/2026, 11:50
In the era of large-scale photometric surveys that achieve millimagnitude-level relative precision and have discovered thousands of exoplanets and binary systems, reassessing and improving the absolute flux scale has become essential. Accurate absolute magnitudes are critical for the detailed characterization, classification, and understanding of the formation and dynamical evolution of...
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06/05/2026, 12:10
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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...
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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...
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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...
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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...
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Dr Serena Benatti (Istituto Nazionale di Astrofisica (INAF))06/05/2026, 16:30
In this talk, I will present a summary of the observational efforts to characterise the planets that could be observed by Ariel and how these studies can support the selection of the future Ariel targets.
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In particular, I will present the "Ariel Masses Survey (ArMS)" with the HARPS-N spectrograph at the Telescopio Nazionale Galileo, which is a five-year large program dedicated to the radial... -
Giulia Piccinini (Istituto Nazionale di Astrofisica (INAF))06/05/2026, 16:55
One of the key goals in planetary population studies is to achieve broad coverage of the parameter space, which is not fully covered by the currently confirmed planets. We can fulfil this aim by incorporating validated planets even if they have not been confirmed yet. Therefore, we can validate them through a vetting procedure. Within the Ariel Mission Candidates Sample, the TESS Planet...
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Mattia Claudio D'Arpa (Istituto Nazionale di Astrofisica (INAF))06/05/2026, 17:15
We present a new, self-consistent catalog of planetary parameters derived from the ARIEL Stellar Catalogue (ASC), a homogeneous dataset of stellar properties. Our work leverages this robust reference frame to provide accurate planetary characteristics for systems in the ARIEL Mission Candidate Sample. We compare our newly derived planetary parameters with those available in the...
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Dr Claudia Di Maio (Istituto Nazionale di Astrofisica (INAF))06/05/2026, 17:35
Precise planetary mass measurements are essential for constraining the internal structure and atmospheric properties of exoplanets. In the framework of the ESA Ariel mission, accurate masses are required to break key degeneracies in atmospheric retrievals. Estimating the observational effort needed to reach the desired mass precision is therefore crucial for the optimisation of current and...
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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...
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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...
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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...
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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,...
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Dr Antonino Francesco Lanza (Istituto Nazionale di Astrofisica (INAF))07/05/2026, 11:00
I shall briefly review the PLAnetary Transits and Oscillations of stars (PLATO), an M-class space mission of the European Space Agency that is due to launch in early 2027. It will observe a wide field in the Southern hemisphere for at least two years searching for transiting planets orbiting bright stars and aiming at a precise determination of their radius within 3-5%, of their mass within...
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Giuseppina Micela (Istituto Nazionale di Astrofisica (INAF))07/05/2026, 11:25
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Laura Magrini (Istituto Nazionale di Astrofisica (INAF))07/05/2026, 11:35
I will discuss the design of the MOS spectrograph that will be proposed to VLT, highlighting its role in the detection of giant exoplanets in different environments.
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07/05/2026, 11:45
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Andrea Lorenzani (Istituto Nazionale di Astrofisica (INAF))
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Monica Rainer (Istituto Nazionale di Astrofisica (INAF))
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Andrea Lorenzani (Istituto Nazionale di Astrofisica (INAF))
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Giuseppina Micela (Istituto Nazionale di Astrofisica (INAF))
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