Astrophysical parameters from <i>Gaia</i> DR2, 2MASS, and AllWISE

Context. Physical and dynamical stellar properties are essential knowledge for understanding the structure, formation, evolution of our Galaxy. Aims. We produced a uniformly derived all-sky catalog astrophysical parameters (APs; age, mass, temperature, bolometric luminosity, distance, dust extinction) to provide insight into physical Milky Way stars. Methods. Exploiting power multiwavelength multi-survey observations from Gaia DR2 parallaxes integrated photometry along with 2MASS AllWISE photometry, we introduce APs, including extinction ( A 0 ) average grain size R line sight, 123 076 271 In contrast previous works, do not use Galactic model as prior in analysis. Results. validate results against other work literature (e.g., benchmark stars, interferometry, Bayestar, StarHorse). The limited optical information photometric bands or lack ultraviolet spectroscopic renders chemistry inference prior-dominated. demonstrate that bring sufficient leverage explore detailed structures interstellar medium Way. Conclusions. DR3, will obtain dispersed light help us break through some limitations this analysis, allowing infer particular. promises data can construct most view chemo-dynamics field star populations