Photometric Stellar Parameters for 195,478 Kepler Input Catalog (KIC) Stars
Bowen Zhang, Yang Huang, Timothy C. Beers, Kai Xiao, Jifeng Liu, Lei, Jia, Henggeng Han, Zhirui Li, Chuanjie Zheng, Yongkang Sun, Ruifeng Shi, and, Hongrui Gu

TL;DR
This study provides accurate photometric stellar parameters for nearly all stars in the Kepler Input Catalog, enabling improved characterization for exoplanet and stellar research.
Contribution
It introduces a method to estimate stellar parameters for over 195,000 KIC stars using photometric data and spectroscopic relationships, covering 97% of the catalog.
Findings
Achieved 0.1 dex metallicity accuracy
Estimated stellar ages with 20% precision for turn-off stars
Determined stellar masses and radii with high accuracy
Abstract
The stellar atmospheric parameters and physical properties of stars in the Kepler Input Catalog (KIC) are of great significance for the study of exoplanets, stellar activity, and asteroseismology. However, despite extensive effort over the past decades, accurate spectroscopic estimates of these parameters are available for only about half of the stars in the full KIC catalog. In our work, by training relationships between photometric colors and spectroscopic stellar parameters from Gaia DR3, the Kepler Issac-Newton Survey, LAMOST DR10, and APOGEE DR17, we have obtained atmospheric-parameter estimates for over 195,000 stars, accounting for 97 of the total sample of KIC stars. We obtain 1 uncertainties of 0.1 dex on metallicity [Fe/H], 100 K on effective temperature , and 0.2 dex on surface gravity log . In addition, based on these atmospheric parameters, we…
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Taxonomy
TopicsAstronomical Observations and Instrumentation · Space Exploration and Technology · Astronomy and Astrophysical Research
