Objectif Age is a fundamental property of stars. It is an essential tool to understand many diverse phenomena in astrophysics, including the evolution of stars, planetary systems, and the Galaxy. However, age is currently the most poorly known property of a star, often to no better than 30-40% accuracy, which is not good enough.The ages of stars cannot be measured directly; they can only be determined by comparing age-sensitive observables with model predictions. Asteroseismology, the study of stellar oscillations, offers the unique opportunity to estimate the ages of stars to within 5-10% of their lifetime. Using state-of-the-art space observations (CoRoT and Kepler) of stellar oscillation frequencies combined with ground-based spectroscopy (e.g. APOGEE), I propose to uniformly determine accurate ages of thousands of stars with unprecedented precision. Building on my extensive experience in this field, I plan to develop and implement new asteroseismic diagnostics for a large number of main-sequence stars, subgiants and red giants. These new age determination methods are expected to be calibrated using stars in binary systems and clusters, and compared with classical methods.Uniform age determinations for a large sample of stars in different directions in the sky will greatly advance the study of stellar populations in the Galaxy. This project is ambitious, and success requires a dedicated approach from a competent team with the right resources and the right leader. Champ scientifique natural sciencesphysical sciencesastronomystellar astronomyasteroseismologynatural sciencesphysical sciencesastronomygalactic astronomysolar astronomynatural sciencesphysical sciencesastronomyphysical cosmologygalaxy evolution Programme(s) FP7-IDEAS-ERC - Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Thème(s) ERC-SG-PE9 - ERC Starting Grant - Universe sciences Appel à propositions ERC-2013-StG Voir d’autres projets de cet appel Régime de financement ERC-SG - ERC Starting Grant Institution d’accueil MAX-PLANCK-GESELLSCHAFT ZUR FORDERUNG DER WISSENSCHAFTEN EV Contribution de l’UE € 1 483 200,00 Adresse HOFGARTENSTRASSE 8 80539 Munchen Allemagne Voir sur la carte Région Bayern Oberbayern München, Kreisfreie Stadt Type d’activité Research Organisations Chercheur principal Saskia Hekker (Dr.) Contact administratif Detlef Steinmann (Mr.) Liens Contacter l’organisation Opens in new window Site web Opens in new window Coût total Aucune donnée Bénéficiaires (1) Trier par ordre alphabétique Trier par contribution de l’UE Tout développer Tout réduire MAX-PLANCK-GESELLSCHAFT ZUR FORDERUNG DER WISSENSCHAFTEN EV Allemagne Contribution de l’UE € 1 483 200,00 Adresse HOFGARTENSTRASSE 8 80539 Munchen Voir sur la carte Région Bayern Oberbayern München, Kreisfreie Stadt Type d’activité Research Organisations Chercheur principal Saskia Hekker (Dr.) Contact administratif Detlef Steinmann (Mr.) Liens Contacter l’organisation Opens in new window Site web Opens in new window Coût total Aucune donnée