Galactic archaeology with ages based on chemical clocks

In the era of large spectroscopic surveys, high-quality spectra can contribute to our understanding of the Galactic chemical evolution, not only providing high-precision abundances of elements belonging to the different nucleosynthesis channels, but also giving constraints to one of the most elusive quantity in astrophysics, i.e. stellar age. Some abundance ratios, called chemical clocks, have proved to be excellent indicators of the stellar age. We can distinguish them in two families: ratios composed by elements whose surface abundances vary during the stellar evolution, such as [C/N], or ratios that are modified by the Galactic chemical evolution, such as [Y/Mg], [Y/Al] etc. In this PhD thesis, I described a method to calibrate empirical relations between abundance ratios, metallicity and stellar ages, using open clusters and solar-like stars as calibrators.