龙蛋双极发射星云
(原标题: Dragon's Egg Bipolar Emission Nebula)
2024-04-24
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恒星是如何形成这个美丽的星云的？在发射星云NGC 6164的中间是一颗异常巨大的恒星。中央的星星被比作牡蛎的珍珠和被阿拉神话中的天龙保护的蛋。这颗恒星位于这张特色图片的中心，编号为HD 148937，它非常热，以至于它发出的紫外线加热了周围的气体。这些气体很可能是之前从恒星中释放出来的，可能是与环绕恒星的伴星引力相互作用的结果。喷出的物质可能被这颗大质量恒星的磁场引导，最终形成了双极星云的对称形状。NGC 6164的跨度约为4光年，位于距南星座Norma约3600光年的地方。新镜报：APOD现在可以通过WhatsApp获得
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How did a star form this beautiful nebula? In the middle of emission nebula NGC 6164 is an unusually massive star. The central star has been compared to an oyster's pearl and an egg protected by the mythical sky dragons of Ara. The star, visible in the center of the featured image and catalogued as HD 148937, is so hot that the ultraviolet light it emits heats up gas that surrounds it. That gas was likely thrown off from the star previously, possibly the result of a gravitational interaction with a looping stellar companion. Expelled material might have been channeled by the magnetic field of the massive star, in all creating the symmetric shape of the bipolar nebula. NGC 6164 spans about four light years and is located about 3,600 light years away toward the southern constellation Norma. New Mirror: APOD now available via WhatsApp
© Rowan Prangley