M82：有超星系风的星系
(原标题: M82: Galaxy with a Supergalactic Wind)
2023-08-02
浏览次数: 83
为什么雪茄星系会冒出滚滚的红烟？这个星暴星系也被称为M82，它是由最近一次大型螺旋星系M81附近的飞掠引起的。然而，这并不能完全解释向外膨胀的红色气体和尘埃的来源。有证据表明，这些气体和尘埃是由许多恒星形成的粒子风共同吹出的，共同形成了银河系的超级风。这些尘埃粒子被认为起源于M82的星际介质，其大小实际上与雪茄烟雾中的颗粒相似。这张特色的摄影马赛克突出了电离氢气强烈发出的红光的特定颜色，展示了这种气体和尘埃的详细细丝。这些细丝绵延一万光年。1200万光年远的雪茄星系是天空中红外光下最亮的星系，用小型望远镜朝大熊星座（大熊座）方向看，可以在可见光下看到它。世界语言的APOD：阿拉伯语、保加利亚语、加泰罗尼亚语、中文（北京）、中文（台湾）、克罗地亚语、捷克语、荷兰语、法语、德语、希伯来语、印度尼西亚语、日语、黑山语、波兰语、俄语、塞尔维亚语、斯洛文尼亚语、西班牙语、台湾语、土耳其语和乌克兰语
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Why is the Cigar Galaxy billowing red smoke? M82, as this starburst galaxy is also known, was stirred up by a recent pass near large spiral galaxy M81. This doesn't fully explain the source of the red-glowing outwardly expanding gas and dust, however. Evidence indicates that this gas and dust is being driven out by the combined emerging particle winds of many stars, together creating a galactic superwind. The dust particles are thought to originate in M82's interstellar medium and are actually similar in size to particles in cigar smoke. The featured photographic mosaic highlights a specific color of red light strongly emitted by ionized hydrogen gas, showing detailed filaments of this gas and dust. The filaments extend for over 10,000 light years. The 12-million light-year distant Cigar Galaxy is the brightest galaxy in the sky in infrared light and can be seen in visible light with a small telescope towards the constellation of the Great Bear (Ursa Major). APOD in world languages: Arabic, Bulgarian, Catalan, Chinese (Beijing), Chinese (Taiwan), Croatian, Czech, Dutch, French, German, Hebrew, Indonesian, Japanese, Montenegrin, Polish, Russian, Serbian, Slovenian, Spanish, Taiwanese, Turkish, and Ukrainian