μCephei
(原标题: Mu Cephei)
2023-10-12
浏览次数: 15
造父变星是一颗非常大的恒星。它是一颗m级超巨星，大约是太阳的1500倍大，是肉眼可见的最大恒星之一，甚至是整个银河系中最大的恒星之一。如果它在我们公平的太阳系中取代太阳，造父变星将很容易吞没火星和木星。造父变星历史上被称为赫歇尔的石榴石星，它的颜色非常红。这颗超巨星距离我们大约2800光年，位于红色发射星云IC 1396的边缘，朝向北方仙王座。这颗超巨星的光线比太阳冷得多，因此比太阳更红，由于银河系内的尘埃的吸收和散射，这颗超巨星的光线进一步变红。造父变星是一颗被充分研究的变星，被认为处于恒星演化的后期阶段，它也是一颗大质量恒星，注定最终会爆炸成为一颗核心坍缩的超新星。
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Mu Cephei is a very large star. An M-class supergiant some 1500 times the size of the Sun, it is one of the largest stars visible to the unaided eye, and even one of the largest in the entire Galaxy. If it replaced the Sun in our fair Solar System, Mu Cephei would easily engulf Mars and Jupiter. Historically known as Herschel's Garnet Star, Mu Cephei is extremely red. Approximately 2800 light-years distant, the supergiant is seen near the edge of reddish emission nebula IC 1396 toward the royal northern constellation Cepheus in this telescopic view. Much cooler and hence redder than the Sun, this supergiant's light is further reddened by absorption and scattering due to intervening dust within the Milky Way. A well-studied variable star understood to be in a late phase of stellar evolution, Mu Cephei is a massive star too, destined to ultimately explode as a core-collapse supernova.
© David Cruz