Distance Estimations of Blue Horizontal-branch Stars from the LAMOST and Sloan Digital Sky Survey Spectroscopic Surveys
Blue horizontal-branch (BHB) stars are standard candles for tracing the structure and assembly history of the Galactic halo. We present color–absolute-magnitude relations for BHB stars in multiple optical and near-infrared bands. Using a calibration sample of 164 BHB stars with precise Gaia Early Data Release 3 (EDR3)...