韦伯望远镜拍摄的头盖骨星云
(原标题: The Cranium Nebula from the Webb Telescope)
2026-03-09
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这个星云的内部发生了什么？由于与人脑相似，它被称为“暴露的头盖骨星云”，但究竟是什么形成了这个星云仍然是个谜。一种想法是头盖骨星云，也被称为PMR 1，是一个围绕白矮星的行星状星云。在这种模式下，当最初的类太阳恒星耗尽中心核燃料并收缩时，外层大气被驱逐出去。另一种与之竞争的观点是，中央恒星的质量要大得多，可能是一颗沃尔夫-拉叶星，它通过湍流的恒星风喷射出气体和尘埃。黑暗的垂直中央分区和薄薄的外层气体外壳使其更加迷人。这张特色图像是由韦伯太空望远镜在中红外光下拍摄的，而第二张图像是在近红外光下拍摄的。未来的观测可能会揭示这个聪明的系统是会悄悄地从人们的视野中消失，还是在许多年后突然爆发成一颗强大的超新星。
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What's going on inside the head of this nebula? Dubbed the Exposed Cranium Nebula for its similarity to the human brain, what created the nebula remains a mystery. One thought is that the Cranium Nebula, also known as PMR 1, is a planetary nebula surrounding a white dwarf star. In this mode, the outer atmosphere was expelled when the original Sun-like star ran out of central nuclear fuel and contracted. A competing thought is that the central star is much more massive, possibly a Wolf-Rayet star, that is ejecting gas and dust via turbulent stellar winds. Adding to the intrigue is the dark vertical central division and the thin outer gaseous shell. The featured image was taken by the Webb Space Telescope in mid- infrared light, while a second image, included as a rollover, is in near-infrared. Future observations may reveal if this brainy system will quietly just fade from view or, many years from now, suddenly erupt in a powerful supernova.