Revised Extinctions and Radii for 1.5 Million Stars Observed by APOGEE, GALAH, and RAVE

Asteroseismology has become widely accepted as a benchmark for accurate and precise fundamental stellar properties. It can therefore be used to validate calibrate parameters derived from other approaches. Meanwhile, one leverage large-volume surveys in photometry, spectroscopy, astrometry infer over wide range of evolutionary stages, independently asteroseismology. Our pipeline, SEDEX, compares the spectral energy distribution predicted by MARCS BOSZ model spectra with 32 photometric bandpasses, combining data 9 major, surveys. We restrict analysis targets available spectroscopy APOGEE, GALAH, RAVE lift temperature-extinction degeneracy. The cross-survey atmospheric parameter uncertainty estimates are homogenized artificial neural networks. Validation our results CHARA interferometry, HST CALSPEC spectrophotometry, asteroseismology, shows that we achieve high precision accuracy. present catalog improved interstellar extinction ($\sigma_{A_V} \simeq$ 0.14 mag) radii ($\sigma_R/R 7.4\%) $\sim$1.5 million stars low- high-extinction ($A_V \lesssim 6 $ fields observed spectroscopic derive global extinctions 184 Gaia DR2 open clusters, confirm differential NGC 6791 6819 have been subject extensive asteroseismic analysis. Furthermore, report 36,854 double-lined main-sequence binary candidates. This will valuable providing constraints on detailed modelling constructing 3D dust maps Kepler field, TESS CVZs, PLATO long duration observation fields.