6698 20240127103630.0 CTALK-2024-0031 Frémat, Y. Details of the H-R diagram: the ’hot’ stars in Gaia DR3 2023 2023-10-06 PRODEX/ 4000140452/ Gaia NO Evry Schatzman School, Oleron (France) yves.fremat@ksb-orb.be https://ees2023.sciencesconf.org/ Invited CTALKINVI