Short-period eclipsing binaries: a purely photometric method to characterise components of detached systems from the Kepler field

We have characterised detached eclipsing binaries from the Kepler field with low mass components by adopting a purely-photometric method to derive stellar parameters. For that, we used an extensive multi-colour dataset to estimate effective temperatures and photometric masses of individual components, based on broad-band photometric data from 2MASS and Pan-STARRS, and applying machine learning methods, such as the clustering technique. We also estimated their radii from additional modelling of the available Kepler light curves using the JKTEBOP code, associated with an asexual genetic algorithm. Our measurements show a persistent radius inflation trend, with measured stellar radii larger than model values by over 20% (despite individual uncertainties) in the low-mass regime. Spectroscopic masses are still needed to confirm the observed radius anomaly and its causes in late-type components of short-period binary systems.