The SAGA so far: reading the history of the Galaxy with asteroseismology

TL;DR

The paper discusses how asteroseismology, combined with classical stellar parameters, enables detailed studies of stars and the Milky Way's history, with the SAGA survey providing valuable data for Galactic evolution research.

Contribution

It introduces the SAGA survey, which combines asteroseismology and classical parameters to improve understanding of stellar and Galactic evolution.

Findings

SAGA provides stellar parameters for stars with Kepler seismic data.

The survey enhances constraints on Milky Way disc evolution.

It offers a new dataset for Galactic archaeology.

Abstract

Asteroseismology has the capability of delivering stellar properties which would otherwise be inaccessible, such as radii, masses and thus ages of stars. When this information is coupled with classical determinations of stellar parameters, such as metallicities, effective temperatures and angular diameters, powerful new diagnostics for stellar and Galactic studies can be obtained. The ongoing Stroemgren survey for Asteroseismology and Galactic Archaeology (SAGA) is pursuing such a goal, by determining photometric stellar parameters for stars with seismic oscillations measured by the Kepler satellite. As the survey continues and expands in sample size, SAGA will provide an unprecedented opportunity to constrain theories of the evolution of the Milky Way disc.