Pubblica selezione per titoli ed eventuale colloquio per il conferimento di una borsa di studio per tirocinio dal titolo “Studio e progettazione di una elettronica di front-end basata su chip […]
PLAnetary Transits and Oscillations of stars (PLATO) is the 3rd medium-size (M3) mission in the ESA Cosmic Vision 2015-2025 program. With its 26 all-refractive telescopes onboard, PLATO secures a FoV of more than 2100 square degrees, allowing us to search for Earth-sized planets in the habitable zone of solar-type bright stars.
The selected range of target luminosities is key to allow follow-up investigations on the detected exo-planetary systems, from RV follow-up, to asteroseismology studies that provide increased precision on the mass of discovered planets. Moreover, bright stellar targets are best cases when studying atmospheres of transiting planets by spectroscopy from space (JWST, Ariel) and from the ground (e.g., Espresso@VLT, Hires@ELT). PLATO is planned for a launch to L2 at the end of 2026.
I will focus my talk on some of the PLATO science cases, and will give an overview on how the instrument and the mission work.
In occasione della Giornata Internazionale delle Donne e delle Ragazze nella Scienza, l'Osservatorio Astrofisico di Catania organizza un incontro online venerdì 25 febbraio 2022. L'evento, dal titolo "Le Donne nella ricerca in […]
Pubblica selezione per titoli ed eventuale colloquio per il conferimento di una borsa di studio per tirocinio dal titolo “Studio e progettazione di una elettronica di front-end basata su chip […]
Pubblica selezione per titoli ed eventuale colloquio per il conferimento di un assegno di ricerca di professionalizzazione dal titolo “Ottimizzazione software per la gestione e automatizzazione del Telescopio Solare dell’Osservatorio […]
Concorso pubblico per titoli ed esame, per il reclutamento di un Tecnologo III livello professionale, con contratto di lavoro a tempo pieno e determinato di tipo A – Settore Tecnico […]
Pubblica selezione per titoli ed eventuale colloquio per il conferimento di un assegno di ricerca di professionalizzazione dal titolo “Applicazione di tecnologie per lo sviluppo del software Telescope Manager Specification […]
In the view of the forthcoming Big Data era for the astronomy community, the conference focuses on challenges coming from the application of ML/DL methods to open problems in astrophysics: novel AI techniques will be presented and joint discussions on their use with observational data will be fostered. A special session on the Square Kilometre Array and its precursors/pathfinders is foreseen.
Concorso pubblico per titoli ed esame, per il reclutamento di un Collaboratore Tecnico degli Enti di Ricerca – VI livello, con contratto di lavoro a tempo determinato e regime di impegno […]
We present the method devised for inferring the Gaia stellar activity index from the analysis of the Ca II infrared triplet (IRT) at 850.03, 854.44, and 866.45 nm in the Gaia Radial Velocity Spectrometer (RVS) spectrum, an overview of the content of the chromospheric activity catalogue published in DR3, and its scientific validation. A sample of well studied PMS stars is considered to identify the regime in which the Gaia stellar activity index may be affected by mass accretion. The correlation with the amplitude of the photometric rotational modulation is also discussed. Three regimes of the chromospheric stellar activity are identified, confirming suggestions made by previous authors on much smaller chromospheric activity indices datasets. The highest stellar activity regime is associated with PMS stars and RS CVn systems, in which activity is enhanced by tidal interaction. Some evidence of a bimodal distribution in MS stars with Teff > 5000 K is also found, which defines the two other regimes, without a clear gap in between. Stars with 3500 K < Teff < 5000 K are found to be either very active PMS stars or active MS stars with a unimodal distribution in chromospheric activity. A dramatic change in the activity distribution is found for Teff < 3500 K, with a dominance of low activity stars close to the transition between partially- and fully-convective stars and a rise in activity down into the fully-convective regime. Overall, the 2M catalogue of chromospheric activity in Gaia DR3 represents a gold mine for studies related to stellar magnetic activity and mass accretion in the solar vicinity.