Accurate and Precise Photospheric Stellar Parameters from Rubin ugriz Photometry

Keyi Ding

Abstract: We have developed a state-of-the-art methodology that uses broadband Sloan Digital Sky Survey or SkyMapper Southern Survey ugriz photometry, Gaia astrometry, three-dimensional reddening maps, plus any and all additional photometry to infer accurate and precise photospheric stellar parameters across the Hertzsprung Russell Diagram. We have demonstrated that our approach provides metallicities for open cluster main sequence stars that are at least as accurate as those from spectroscopic surveys like the APO Galactic Evolution Experiment (APOGEE), the GALactic Archaeology with HERMES (GALAH) survey, or the Large Sky Area Multi-Object Fibre Spectroscopic Telescope (LAMOST) Experiment for Galactic Understanding and Exploration (LEGUE). We have also shown that the masses and radii our methodology provides are in accord with those produced by asteroseismology-informed analyses of the main sequence stars in the Kepler Legacy Sample. The use of our methodology on Rubin ugriz photometry would have many applications in the Rubin Stars, Milky Way, and Local Volume Science Collaboration.


This poster will be displayed on Monday and Tuesday.


Career Stage: 
Undergrad Student