The ERC Advanced Grant 2020 (#101019653) ISSP started on 1 Sep 2021 and will end in Aug 2026. With this grant, we aim to complete and exploit a large survey of stellar parameters for various scientific purposes.
The first one is to bring direct constraints on the stars hosting exoplanets and for which a direct interferometric characterization, at a spatial resolution of 0.1mas, is possible.
The second one is to bring direct constraints on as many stars as possible in the Plato Input Catalogue, with a special focus on F5-K7 dwarfs stars.
But the more ambitious scientific purpose of this project is a dense and complete survey of the HR diagram in terms of fundamental stellar parameters, with a particular attention to the variability effects that generate deviations to standard laws.

The project is based on the CHARA/SPICA instrument and on many developments that we are considering with this grant around the survey management, the stellar atmosphere and stellar evolution codes, and the determination of new surface brightness colour relations.