180205期:NGC 7635:气泡星云

NGC 7635:气泡星云

这是气泡与云气的大对决。气泡星云NGC 7635,是由位于气泡右侧的泛蓝大质量恒星BD+602522恒星风向外推挤而生的。在它的右侧住着一团泛红的巨分子云。在太空中的这个地方,一种不可抗拒的力量以一种有趣的方式与一个无法移动的物体产生了碰撞。分子云能容纳气泡的膨胀,但也受到了气泡中心恒星的热辐射的影响。辐射加热了这团分子云的密集区域,使其发光。图中的气泡星云宽度约十光年,一个由恒星和气壳组成的更大的复杂云气的一部分。往埃塞俄比亚王后(仙后座)的方向看去,用小口径望远镜就可以观测到气泡星云。

翻译:银河说翻译组 岑
审核:银河说顾问组 tequila

NGC 7635: The Bubble Nebula Expanding
Image Credit: Göran Nilsson & The Liverpool Telescope

Explanation: It’s the bubble versus the cloud. NGC 7635, the Bubble Nebula, is being pushed out by the stellar wind of massive star BD+602522, visible in blue toward the right, inside the nebula. Next door, though, lives a giant molecular cloud, visible to the far right in red. At this place in space, an irresistible force meets an immovable object in an interesting way. The cloud is able to contain the expansion of the bubble gas, but gets blasted by the hot radiation from the bubble‘s central star. The radiation heats up dense regions of the molecular cloud causing it to glow. The Bubble Nebula, pictured here is about 10 light-years across and part of a much larger complex of stars and shells. The Bubble Nebula can be seen with a small telescope towards the constellation of the Queen of Aethiopia (Cassiopeia).

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