Comparative Analysis of Mass Determination Methods for Pulsating White Dwarfs

A. H. CÓRSICO; L. M. CALCAFERRO; M. UZUNDAG; L. G. ALTHAUS; S. O. KEPLER; K. WERNER

Barcelona

Workshop; EUROWD24: 23rd European White Dwarf Workshop; 2024

Universitat Politécnica de Catalunya

Stellar mass determination poses a central challenge in stellar astrophysics. This study delves into the mass assessment of isolated pulsating white dwarf (WD) stars through spectroscopy, asteroseismology, and astrometry. Focusing on a sample of DAVs (pulsating H-rich atmosphere WDs), DBVs (pulsating He-rich atmosphere WDs), and GW Vir variables (pulsating hot C-, O-, and He-rich atmosphere WDs and pre-WDs), we carefully compare the mass values derived from these diverse methods, by employing consistent WD models and evolutionary tracks. Here, we show the first results of this analysis.