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standard candle

/ˈstændəd ˈkændl/

翻译: 天文学术语,指具有已知绝对星等的天体(如造父变星或Ia型超新星),通过比较其观测亮度与已知光度来测量宇宙距离。

1 个条目

phrase

/ˈstændəd ˈkændl/C1formalscientific
  • zh天文学术语,指具有已知绝对星等的天体(如造父变星或Ia型超新星),通过比较其观测亮度与已知光度来测量宇宙距离。

An astronomical term referring to a celestial object with a known absolute magnitude, used to measure distances in space by comparing its observed brightness with its known luminosity.

  1. Astronomical distance indicatorC2formal

    An astronomical object with a known absolute magnitude, used to measure distances in space by comparing its observed brightness.

    zh标准烛光

    • Type Ia supernovae are used as standard candles to measure cosmic distances.
    • Cepheid variables serve as standard candles for determining the scale of the universe.
    • Astronomers rely on standard candles to calculate how far away galaxies are.