HAYDN -- High-precision AsteroseismologY of DeNse stellar fields (ESA Voyage 2050 White Paper)
astro-ph.SR
/ Authors
Andrea Miglio, Leo Girardi, Frank Grundahl, Benoit Mosser, Nate Bastian, Angela Bragaglia, Karsten Brogaard, Gael Buldgen, William Chantereau, Bill Chaplin
and 22 more authors
Cristina Chiappini, Marc-Antoine Dupret, Patrick Eggenberger, Mark Gieles, Rob Izzard, Daisuke Kawata, Christoffer Karoff, Nadege Lagarde, Ted Mackereth, Demetrio Magrin, Georges Meynet, Eric Michel, Josefina Montalban, Valerio Nascimbeni, Arlette Noels, Giampaolo Piotto, Roberto Ragazzoni, Igor Soszynski, Eline Tolstoy, Silvia Toonen, Amaury Triaud, Fiorenzo Vincenzo
/ Abstract
In the last decade, the Kepler and CoRoT space-photometry missions have demonstrated the potential of asteroseismology as a novel, versatile and powerful tool to perform exquisite tests of stellar physics, and to enable precise and accurate characterisations of stellar properties, with impact on both exoplanetary and Galactic astrophysics. Based on our improved understanding of the strengths and limitations of such a tool, we argue for a new small/medium space mission dedicated to gathering high-precision, high-cadence, long photometric series in dense stellar fields. Such a mission will lead to breakthroughs in stellar astrophysics, especially in the metal poor regime, will elucidate the evolution and formation of open and globular clusters, and aid our understanding of the assembly history and chemodynamics of the Milky Way's bulge and few nearby dwarf galaxies.