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卷舌三

卷舌三
Menkib, ξ Per

英仙座的恒星
观测资料
历元 J2000
星座 英仙座
星官 昴宿 卷舌
赤经 03h 58m 57.9011s[1]
赤纬 +35° 47′ 27.717″[1]
视星等(V) 4.042[1]
特性
光谱分类O7.5IIIe[1]
U−B 色指数+-0.97[1]
B−V 色指数+0.03[1]
变星类型slightly variable
天体测定
径向速度 (Rv)70.1[1] km/s
自行 (μ) 赤经:1.92[1] mas/yr
赤纬:2.30[1] mas/yr
视差 (π)1.84 ± 0.70[1] mas
距离approx. 1,800 ly
(approx. 500 pc)
绝对星等 (MV)−4.70
详细资料
质量40 [2] M
亮度330,000 [2] L
温度37,000 [2] K
自转216 km/s.
年龄2–3×106[2]
其他命名
46 Per, HR 1228, HD 24912, FK5 148, SAO 56856

卷舌三,即英仙座ξXi Perseiξ Per),是一个位于英仙座的恒星。它的固有名 Menkib(或 MenchibMenkhib)来自阿拉伯语,意思是昴宿星团的肩膀。卷舌三的视星等为+4.042,属于光谱类型 O7.5III 的蓝巨星,距离地球约1800光年。

性质

卷舌三的可见光光度是太阳的13500倍。如果将它辐射的紫外线一起算入,它的总热辐射将高达太阳的33万倍。

卷舌三的质量是太阳的40倍,表面有效温度是37,000 K,是肉眼可见温度最高的恒星之一。

参考资料

  1. ^ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 SIMBAD query result: Menkhib -- Emission Line Star. Centre de Données astronomiques de Strasbourg. [2010-02-08]. (原始内容存档于2019-09-21). 
  2. ^ 2.0 2.1 2.2 2.3 Professor James B. (Jim) Kaler. MENKIB (Xi Persei). University of Illinois. [2010-02-07]. (原始内容存档于2020-07-28). 

外部链接

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卷舌三
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