超新星遗迹西梅斯147
(原标题: Supernova Remnant Simeis 147)
2022-01-13
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在这张超新星遗迹西美斯147的详细图像中，我们很容易迷失在复杂的、环状的、扭曲的细丝中。它也被编号为Sharpless 2-240，它有一个流行的绰号，意大利面星云。它位于金牛座和御夫座的交界处，覆盖了天空中近3度或6个满月。这大约是150光年，而恒星碎片云的估计距离是3000光年。这张合成图包含了通过窄带滤光片拍摄的图像数据，其中电离氢原子和双电离氧原子发出的红色辐射在微弱的蓝绿色色调中追踪到受冲击的发光气体。据估计，这颗超新星的遗迹大约有4万年的历史，这意味着来自大质量恒星爆炸的光首次到达地球是在4万年前。但不断膨胀的残余物并不是唯一的后果。这场宇宙灾难还留下了一颗旋转的中子星或脉冲星，这是原始恒星核心的全部遗迹。
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It's easy to get lost following the intricate, looping, twisting filaments in this detailed image of supernova remnant Simeis 147. Also cataloged as Sharpless 2-240 it goes by the popular nickname, the Spaghetti Nebula. Seen toward the boundary of the constellations Taurus and Auriga, it covers nearly 3 degrees or 6 full moons on the sky. That's about 150 light-years at the stellar debris cloud's estimated distance of 3,000 light-years. This composite includes image data taken through narrow-band filters where reddish emission from ionized hydrogen atoms and doubly ionized oxygen atoms in faint blue-green hues trace the shocked, glowing gas. The supernova remnant has an estimated age of about 40,000 years, meaning light from the massive stellar explosion first reached Earth 40,000 years ago. But the expanding remnant is not the only aftermath. The cosmic catastrophe also left behind a spinning neutron star or pulsar, all that remains of the original star's core.
© Jason Dain