| 单词 | Quasar 3C273 |
| 释义 |
Quasar 3C273
中文百科
3C 273 3C 273（重定向自Quasar 3C273）
    3C 273是位于室女座的一个类星体。它在可见光波段上是最明亮的一个类星体，在天空中的视星等大约是12.9等，是最靠近地球的类星体之一，红移 z只有0.158。它的光度距离，D L = 24.4亿光年（749 Mpc）是经由z值换算的。它也是最明亮的类星体之一，绝对星等为-26.7等。通过对它宽广的发射谱线的回荡映射 reverberation mapping测量，它的质量是太阳质量的8.86 ± 1.87 亿倍。
英语百科
3C 273 3C 273（重定向自Quasar 3C273）
   3C 273 is a quasar located in the constellation Virgo. It was the first quasar ever to be identified. It is the optically brightest quasar in our sky (m ~12.9), and one of the closest with a redshift, z, of 0.158. A luminosity distance of DL = 749 megaparsecs (2.4 Gly) may be calculated from z. It is also one of the most luminous quasars known, with an absolute magnitude of −26.7, meaning that if it were only as distant as Pollux (~10 parsecs) it would appear nearly as bright in the sky as the Sun. Since the sun's absolute magnitude is 4.83, it means that the quasar is over 4 trillion times brighter than the sun. Its mass has been measured to be 886 ± 187 million solar masses through broad emission-line reverberation mapping. |
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