燃烧的恒星星云
(原标题: The Flaming Star Nebula)
2023-03-01
浏览次数: 16
AE Aurigae着火了吗？否。虽然AE御夫座被命名为火焰星，而它周围的星云IC 405被命名为火焰星星云，虽然这个星云看起来像一个旋转的火焰，但实际上并没有火。火，通常被定义为快速获得氧气的分子，只有在氧气充足的情况下才会发生，在像恒星这样的高能量、低氧环境中并不重要。明亮的AE Aurigae恒星位于火星星云的中心附近，它是如此的热以至于发出蓝色的光，它发出的光能量如此之大，以至于把电子从周围的气体中撞开。当质子重新获得一个电子时，就会发出光，就像周围的发射星云所看到的那样。这是三周前拍摄的，在合成图像的中心附近可以看到火星星云，在左边的红色蝌蚪星云和右边的蓝尾彗星ZTF之间。火星星云距离我们约1500光年，跨度约5光年，在御夫座（御夫座）方向用小型望远镜就能看到。
查看原文解释
Is star AE Aurigae on fire? No. Even though AE Aurigae is named the Flaming Star and the surrounding nebula IC 405 is named the Flaming Star Nebula, and even though the nebula appears to some like a swirling flame, there is no fire. Fire, typically defined as the rapid molecular acquisition of oxygen, happens only when sufficient oxygen is present and is not important in such high-energy, low-oxygen environments such as stars. The bright star AE Aurigae occurs near the center of the Flaming Star Nebula and is so hot it glows blue, emitting light so energetic it knocks electrons away from surrounding gas. When a proton recaptures an electron, light is emitted, as seen in the surrounding emission nebula. Captured here three weeks ago, the Flaming Star Nebula is visible near the composite image's center, between the red Tadpole Nebula on the left and blue-tailed Comet ZTF on the right. The Flaming Star Nebula lies about 1,500 light years distant, spans about 5 light years, and is visible with a small telescope toward the constellation of the Charioteer (Auriga).
© Thomas Röell