龍蛋雙極發射星雲
Dragon's Egg Bipolar Emission Nebula

來源:Rowan Prangley|發表日期:2024-04-24
一顆恆星是如何形成這個美麗的星雲的? 在發射星雲 NGC 6164 的中央,有一顆異常巨大的恆星。 人們把這顆中心恆星比作牡蠣的珍珠和被神話中的阿拉天龍保護著的蛋。 這顆恆星的溫度非常高,它發出的紫外線能加熱它周圍的氣體。 這些氣體很可能是之前從恆星中甩出的,可能是與一顆環形恆星伴星發生引力相互作用的結果。 排出的物質可能被大質量恆星的磁場引導,從而形成了雙極星雲的對稱形狀。 NGC 6164 的跨度約為 4 光年,位於約 3600 光年外的南諾爾馬星座。 新鏡子現在可以透過 WhatsApp 使用 APOD
原文: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
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