哈勃拍摄的气泡星云

2022年3月23日

The Bubble Nebula from Hubble
Image Credit: NASA, ESA, Hubble; Processing & Copyright: Mehmet Hakan Özsaraç

Explanation: Massive stars can blow bubbles. The featured image shows perhaps the most famous of all star-bubbles, NGC 7635, also known simply as The Bubble Nebula. Although it looks delicate, the 7-light-year diameter bubble offers evidence of violent processes at work. Above and left of the Bubble’s center is a hot, O-type star, several hundred thousand times more luminous and some 45-times more massive than the Sun. A fierce stellar wind and intense radiation from that star has blasted out the structure of glowing gas against denser material in a surrounding molecular cloud. The intriguing Bubble Nebula and associated cloud complex lie a mere 7,100 light-years away toward the boastful constellation Cassiopeia. This sharp, tantalizing view of the cosmic bubble is a reprocessed composite of previously acquired Hubble Space Telescope image data.

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哈勃拍摄的气泡星云
影像提供: NASA, ESA, Hubble; 影像处理与版权: Mehmet Hakan Özsaraç

说明: 大质量恒星会吹气泡。这幅主题影像所呈现的，也许是所有恒星气泡中最著名的NGC 7635，因此直称为气泡星云。虽然它看来很纤细，但是这团宽达7光年的气泡却是剧烈天文过程的明证。在这团气泡中心的左上方，有一颗炽热、光度是太阳数十万倍、质量约为45倍的O型星。这颗恒星所发出的猛烈恒星风和辐射，在周围相对致密的分子云物质里，吹出了这团明亮的气泡状天体。有趣的气泡星云与周围的星云复合体，位在仙后座方向，距离我们只有7,100光年左右。这张清晰迷人的气泡星云照片，是使用先前拍摄的哈勃太空望远镜影像数据，经过重处理而成。

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明日的图片: open space