The advent of the second data release of the Gaia mission, in combination with data from
large spectroscopic surveys, is revolutionizing our understanding of the Galaxy. Thanks to …

After hydrogen and helium, oxygen, carbon, and nitrogen—hereinafter, the CNO elements—
are the most abundant species in the universe. They are observed in all kinds of …

Context. In the last 15 years different ground-based spectroscopic surveys have been
started (and completed) with the general aim of delivering stellar parameters and elemental …

Context. The chemo-physical parametrisation of stellar spectra is essential for
understanding the nature and evolution of stars and of Galactic stellar populations. A …

Context. The motion of stars has been used to reveal details of the complex history of the
Milky Way, in constant interaction with its environment. Nevertheless, to reconstruct the …

Context. The Gaia-ESO Public Spectroscopic Survey is an ambitious project designed to
obtain astrophysical parameters and elemental abundances for 100 000 stars, including …

Abstract Knowledge of the ages of the stars formed over a galaxy's lifetime is fundamental to
an understanding of its formation and evolution. However, stellar ages are difficult to obtain …

Understanding the formation and evolution of our Galaxy requires accurate distances, ages,
and chemistry for large populations of field stars. Here, we present several updates to our …

Context. Precise stellar ages from asteroseismology have become available and can help to
set stronger constraints on the evolution of the Galactic disc components. Recently …

Context. The analysis of the latest release of the Apache Point Observatory Galactic
Evolution Experiment project (APOGEE DR16) data suggests the existence of a clear …