馬頭星雲
The Horsehead Nebula
來源:Alex Lin
(Chilescope)|發表日期:2024-11-25
獵戶座的馬頭星雲是天空中最容易辨認的星雲之一,它是一大片黑暗分子云的一部分。 馬頭星雲也被稱為巴納德 33 , 19 世紀末,人們首次在照相底片上發現了這個形狀奇特的星雲。 紅光主要來自星雲後面的氫氣,被附近的明亮恆星獵戶座 Sigma 電離。 馬頭星雲的黑暗主要是由厚厚的塵埃造成的,不過馬頭星雲頸部的下半部分在左側投下了陰影。 離開星雲的氣體流被強大的磁場漏斗狀地包裹著。 馬頭星雲底部的亮點是剛剛形成的年輕恆星。 光線從馬頭星雲到達我們這裡大約需要 1500 年。 這張照片是從智利山區的 Chilescope 天文臺拍攝的。
原文:One of the most identifiable nebulas in the sky, the Horsehead Nebula in Orion, is part of a large, dark, molecular cloud. Also known as Barnard 33, the unusual shape was first discovered on a photographic plate in the late 1800s. The red glow originates from hydrogen gas predominantly behind the nebula, ionized by the nearby bright star Sigma Orionis. The darkness of the Horsehead is caused mostly by thick dust, although the lower part of the Horsehead's neck casts a shadow to the left. Streams of gas leaving the nebula are funneled by a strong magnetic field. Bright spots in the Horsehead Nebula's base are young stars just in the process of forming. Light takes about 1,500 years to reach us from the Horsehead Nebula. The featured image was taken from the Chilescope Observatory in the mountains of Chile.
※ 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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