NGC 6188 ：阿拉之龍
NGC 6188: Dragons of Ara
來源：Carlos Taylor｜發表日期：2024-06-19
龍在天空的祭壇上戰鬥嗎？ 雖然看起來是這樣，但這些龍都是由稀薄的氣體和塵埃組成的幻象。發光雲團所在的發射星雲 NGC 6188 位於大約 4000 光年之外，靠近一個大分子云團的邊緣。該區域在幾百萬年前才形成了巨大而年輕的恆星，這些恆星被嵌入了 Ara OB 1 組合中，用恆星風和強烈的紫外線輻射塑造了黑暗的形狀，併為星雲發光提供了動力。最近的恆星形成本身很可能是由前幾代大質量恆星產生的風和超新星爆炸引發的，它們席捲並壓縮了分子氣體。這幅令人印象深刻的詳細影像跨度超過 2 度（ 4 個滿月），相當於 NGC 6188 估計距離的 150 多光年。
原文：Do dragons fight on the altar of the sky? Although it might appear that way, these dragons are illusions made of thin gas and dust. The emission nebula NGC 6188, home to the glowing clouds, is found about 4,000 light years away near the edge of a large molecular cloud, unseen at visible wavelengths, in the southern constellation Ara (the Altar). Massive, young stars of the embedded Ara OB1 association were formed in that region only a few million years ago, sculpting the dark shapes and powering the nebular glow with stellar winds and intense ultraviolet radiation. The recent star formation itself was likely triggered by winds and supernova explosions from previous generations of massive stars, that swept up and compressed the molecular gas. This impressively detailed image spans over 2 degrees (four full Moons), corresponding to over 150 light years at the estimated distance of NGC 6188.
※ 本文由萌芽機器人自動轉貼自每日一天文圖（Astronomy Picture of the Day，APOD），原文為英文，正體中文是透過 DeepL 翻譯及 OpenCC 進行自動處理，內容僅供參考，若有任何錯誤之處還請見諒！
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