Exploring the reliability of chemical traits for RGB stars using accurate asteroseismic ages

With the detailed measurements available for our Galaxy, the Milky Way is a unique laboratory for the galactic archaeology field which is trying to reconstruct the galactic evolution history from fossil records. The correlation suggested by galactic chemical evolution tells us that the overall metal content should increase with time. In this panorama, there is active research ongoing to choose which abundance ratios are the best to trace star formation history between stellar generations. The most useful ones are those that have a strong dependency with time, also known as ”chemical clocks”. Nevertheless, it has been recently demonstrated that chemical-clocks can not be used as universal relations being dependent on the metallicity and galactic environment of the star. In addition, precise age information is very difficult to obtain for field stars on larger scales. In this framework we are investigating a new method of determining ages from high precision spectroscopy alone by calibrating chemical clocks deriving accurate asteroseismic ages and high precision abundances. For this we have gathered a set of 75 stars covering a range of ages and metallicities using UVES spectrograph. Thanks to the exquisite quality of the data in terms of resolution (∼110000) and signal to noise (∼ 100) we aim to confirm (or reject) and calibrate the chemical clocks for field giants, achieving a key result for galactic archaeology