Presentation description

Accurate stellar ages are crucial for understanding the Milky Way's formation and evolution. The abundance ratio of carbon to nitrogen ([C/N]) is a powerful tool that can often be used as a mass proxy for evolved stars, aiding in age estimations. However, the [C/N] ratio differs from the expected value in a number of stars, causing this method to become invalid some cases. This poster investigates stars that deviate from the ordinary [C/N] vs. mass trend. Our goal is to identify certain abundances or other stellar parameters that correlate with outlier stars, aiming to improve the interpretation of stellar abundances in the context of stellar ages and/or multiplicity.