海鸥星云
(原标题: The Seagull Nebula)
2024-03-13
浏览次数: 14
在地球上的天文学家看来，一大片发光的气体和尘埃呈现出一幅像鸟一样的景象，这就暗示了它的流行绰号：海鸥星云。这幅宇宙鸟的肖像覆盖了银河系平面上2.5度宽的狭长地带，靠近大犬座的阿尔法星天狼星的方向。当然，这个区域也包括其他目录名称的天体：值得注意的是NGC 2327，这是一个致密的，布满尘埃的发射和反射星云，嵌入了一颗大质量恒星，形成了鸟的头。广阔的海鸥星云可能是被连续的超新星爆炸扫过的更大的壳结构的一部分，它的编号为Sh2-296和IC 2177。图中右下方突出的蓝色弧线是逃逸恒星大犬座FN发出的弓形激波。在海鸥星云3800光年的距离上，这个由大犬座OB1的其他恒星组成的气体云和尘埃云的复调被氢原子发出的红色光芒所主导，跨度超过200光年。几乎超空间：随机APOD生成器
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A broad expanse of glowing gas and dust presents a bird-like visage to astronomers from planet Earth, suggesting its popular moniker: the Seagull Nebula. This portrait of the cosmic bird covers a 2.5-degree wide swath across the plane of the Milky Way, near the direction of Sirius, alpha star of the constellation of the Big Dog (Canis Major). Of course, the region includes objects with other catalog designations: notably NGC 2327, a compact, dusty emission and reflection nebula with an embedded massive star that forms the bird's head. Likely part of a larger shell structure swept up by successive supernova explosions, the broad Seagull Nebula is cataloged as Sh2-296 and IC 2177. The prominent bluish arc below and right of center is a bow shock from runaway star FN Canis Majoris. Dominated by the reddish glow of atomic hydrogen, this complex of gas and dust clouds with other stars of the Canis Majoris OB1 association spans over 200 light-years at the Seagull Nebula's estimated 3,800 light-year distance. Almost Hyperspace: Random APOD Generator
© Gianni Lacroce