Gaia GSP-Spec catalogue

The impact of possible GSP-Spec parameter inaccuracies on the derived extinctions, luminosities, radii and masses are also explored, revealing that the mass is the most affected quantity. The validations of the radii and masses, by comparison with interferometric and asteroseismic data, confirm their high-quality, even when the targets suffer from large interstellar extinction. We also emphasize that they are fully compatible and homogeneous with the GSP-Spec parameters.

This allows to avoid systematics and biases that could be hidden when combining data from different (and potentially) heterogeneous catalogues. Some example applications of this catalogue are finally presented: (i) exoplanet radii and masses, (ii) present day mass distribution functions, (iii) identification of Galactic populations from their mass distribution, and (iv) Galactic halo accreted star luminosities and masses confirming their merger epochs.