CG 30 ：彗星狀球狀體
CG 30: Cometary Globules
來源：Marcelo Salemme｜發表日期：2026-04-28
它們宛如山巔，卻正在孕育恆星。在這片繁星密佈的天域中心附近，邊緣明亮、形態流動的星團正向航海星座——船尾座和船帆座的邊界聚集。由星際氣體和塵埃構成的這些彗星狀球體群，每個直徑達數光年，距離我們約 1300 光年。 來自附近高溫恆星的高能紫外線塑造了這些球狀體，並使其明亮的邊緣電離。這些球狀體還從船帆座超新星遺蹟中向外流散，這可能影響了它們向後掃掠的形狀。在球狀體內部，冷氣體和塵埃的核心很可能正在坍縮，形成低質量恆星，而這些恆星的形成最終將導致球狀體消散。 事實上，彗星狀球體CG 30 （該群體的右上角）在其頭部內部呈現出微弱的紅色光暈，這是恆星在形成早期階段噴射出高能噴流的明顯跡象。
原文：They're like mountain peaks, but they are forming stars. Bright-rimmed, flowing shapes gather near the center of this rich starfield toward the borders of the nautical southern constellations Puppis and Vela. Composed of interstellar gas and dust, the grouping of light-year sized cometary globules is about 1300 light-years distant. Energetic ultraviolet light from nearby hot stars has molded the globules and ionized their bright rims. The globules also stream away from the Vela supernova remnant which may have influenced their swept-back shapes. Within them, cores of cold gas and dust are likely collapsing to form low mass stars whose formation will ultimately cause the globules to disperse. In fact, cometary globule CG 30 (upper right in the group) sports a small reddish glow inside its head, a telltale sign of energetic jets from a star in the early stages of formation.
※ 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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