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 a few nearby dwarf galaxies.

在过去的十年中，开普勒CoRoT和CoRoT空间光度测量任务已经证明了星震学作为一种新颖，多功能且功能强大的工具的潜力，可以执行星体物理学的精美测试，并能够精确，准确地表征星体特性，同时对系外行星和银河系天体物理学都有影响。基于我们对这种工具的优势和局限性的进一步了解，我们提出了一项新的中小型太空任务，该任务致力于在密集的恒星场中收集高精度，高节奏，长光度系列。这样的任务将导致恒星天体物理学方面的突破，特别是在金属贫瘠的情况下，将阐明开放球状星团的形成和演化，并帮助我们了解银河系隆起和附近一些矮星的组装历史和化学动力学。星系。