14.4.6 Astrophysical parameters
All the astrophysical parameters expected to be identical for binary stars are tested using the wide binary catalogue of El-Badry et al. (2021) limited to a chance alignment probability .
First tests work on low extinction stars, checking that indeed their extinction values and associated uncertainties are consistent with being low. For this we use a selection in Galactic latitude where the extinction is expected to be small and at most , stars within the local bubble with parallax20 mas (50 pc), where there is no significant extinction, and stars for which according to the 3D extinction map of Lallement et al. (2019). We also use those low extinction samples to check the DIB equivalent width, the colour-temperature relations, the GSP-Phot absolute magnitude, the FLAME stellar evolutionary stage and the DSC classification.
Temperature, log g, metallicity, abundances
Stellar evolution parameters
, luminosity, radius, mass and ages were compared with asteroseismic ones (Yu et al. 2018; Serenelli et al. 2017; Godoy-Rivera et al. 2021). Radius are compared with the JMMC Catalogues: JSDC version 2 (Bourges et al. 2017) and JMDC (Duvert 2016), selecting only stars with Gaia DR3 parallax relative error smaller than 10%. The gravitational redshift is compared to GALAH DR3 (Buder et al. 2021) and Carmenes (Lafarga et al. 2020).