Stellar evolution confronts axion models

Abstract Axion production from astrophysical bodies is a topic in continuous development, because of theoretical progress the estimate stellar emission rates and, especially, improved observations. We carry out comprehensive analysis most informative astrophysics data, revisiting bounds on axion couplings to photons, nucleons and electrons, reassessing significance various hints anomalous energy losses. confront performance constructions accounting for these hints, while complying with observational limits couplings. identify favorable models, regions mass/couplings parameter space which are preferred by global fit. Finally, we scrutinize discovery potential such models at upcoming helioscopes, namely IAXO its scaled versions.