Mapping the Milky Way with Gaia XP spectra. II.
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Due to their nearly constant absolute magnitudes and old ages, Blue Horizontal Branch (BHB) stars are frequently used as standard candles to study the kinematics and structures...
蓝水平分支星(Blue Horizontal Branch, BHB)因具有近乎恒定的绝对星等与古老的年龄,常被用作标准烛光,以研究运动学与结构……



