Objective The Milky Way is a complex system, with dynamical and chemical substructures, where several competing processes such as mergers, internal secular evolution, gas accretion and gas flows take place. To study in detail how such a giant spiral galaxy was formed and evolved, we need to reconstruct the sequence of its main formation events with high (~10%) temporal resolution. Asterochronometry will determine accurate, precise ages for tens of thousands of stars in the Galaxy. We will take an approach distinguished by a number of key aspects including, developing novel star-dating methods that fully utilise the potential of individual pulsation modes, coupled with a careful appraisal of systematic uncertainties on age deriving from our limited understanding of stellar physics. We will then capitalise on opportunities provided by the timely availability of astrometric, spectroscopic, and asteroseismic data to build and data-mine chrono-chemo-dynamical maps of regions of the Milky Way probed by the space missions CoRoT, Kepler, K2, and TESS. We will quantify, by comparison with predictions of chemodynamical models, the relative importance of various processes which play a role in shaping the Galaxy, for example mergers and dynamical processes. We will use chrono-chemical tagging to look for evidence of aggregates, and precise and accurate ages to reconstruct the early star formation history of the Milky Way’s main constituents.The Asterochronometry project will also provide stringent observational tests of stellar structure and answer some of the long-standing open questions in stellar modelling (e.g. efficiency of transport processes, mass loss on the giant branch, the occurrence of products of coalescence / mass exchange). These tests will improve our ability to determine stellar ages and chemical yields, with wide impact e.g. on the characterisation and ensemble studies of exoplanets, on evolutionary population synthesis, integrated colours and thus ages of galaxies. Fields of science natural sciencesphysical sciencesastronomygalactic astronomynatural sciencesphysical sciencesastronomyplanetary sciencesplanetsexoplanetology Keywords asteroseismology Galactic archeology stellar structure and evolution Programme(s) H2020-EU.1.1. - EXCELLENT SCIENCE - European Research Council (ERC) Main Programme Topic(s) ERC-2017-COG - ERC Consolidator Grant Call for proposal ERC-2017-COG See other projects for this call Funding Scheme ERC-COG - Consolidator Grant Host institution ALMA MATER STUDIORUM - UNIVERSITA DI BOLOGNA Net EU contribution € 1 065 785,59 Address VIA ZAMBONI 33 40126 Bologna Italy See on map Region Nord-Est Emilia-Romagna Bologna Activity type Higher or Secondary Education Establishments Links Contact the organisation Opens in new window Website Opens in new window Participation in EU R&I programmes Opens in new window HORIZON collaboration network Opens in new window Total cost € 1 065 785,59 Beneficiaries (2) Sort alphabetically Sort by Net EU contribution Expand all Collapse all ALMA MATER STUDIORUM - UNIVERSITA DI BOLOGNA Italy Net EU contribution € 1 065 785,59 Address VIA ZAMBONI 33 40126 Bologna See on map Region Nord-Est Emilia-Romagna Bologna Activity type Higher or Secondary Education Establishments Links Contact the organisation Opens in new window Website Opens in new window Participation in EU R&I programmes Opens in new window HORIZON collaboration network Opens in new window Total cost € 1 065 785,59 THE UNIVERSITY OF BIRMINGHAM United Kingdom Net EU contribution € 893 077,41 Address Edgbaston B15 2TT Birmingham See on map Region West Midlands (England) West Midlands Birmingham Activity type Higher or Secondary Education Establishments Links Contact the organisation Opens in new window Website Opens in new window Participation in EU R&I programmes Opens in new window HORIZON collaboration network Opens in new window Total cost € 893 077,41