NGC 1360 ：羅賓蛋星雲
NGC 1360: The Robin's Egg Nebula
來源：Andrea Iorio,
Vikas Chander &
ShaRA Team｜發表日期：2025-05-14
這個漂亮的星雲位於大約 1500 光年之外，在這個望遠鏡檢視中，它的形狀和顏色讓人聯想到知更鳥的蛋。這個宇宙雲的跨度約為 3 光年，穩穩地依偎在南火爐座（Fornax）的邊界內。作為一個行星狀星雲，蛋形的 NGC 1360 並不代表一個開始。相反，它對應的是一顆衰老恆星演化過程中短暫的最後階段。事實上，在星雲中心可見的 NGC 1360 中心恆星是一個已知的雙星系統，很可能由兩顆進化的白矮星組成，它們的質量比太陽小，但溫度卻比太陽高得多。 它們強烈的紫外線輻射將它們相互環繞的氣態籠罩層中的原子中的電子剝離出來。這裡看到的 NGC 1360 內部的藍綠色是電子與雙重電離的氧原子重新結合時產生的強輻射。 天體驚喜你的生日是哪一天？
原文：This pretty nebula lies some 1,500 light-years away, its shape and color in this telescopic view reminiscent of a robin's egg. The cosmic cloud spans about 3 light-years, nestled securely within the boundaries of the southern constellation of the Furnace (Fornax). Recognized as a planetary nebula, egg-shaped NGC 1360 doesn't represent a beginning, though. Instead, it corresponds to a brief and final phase in the evolution of an aging star. In fact, visible at the center of the nebula, the central star of NGC 1360 is known to be a binary star system likely consisting of two evolved white dwarf stars, less massive but much hotter than the Sun. Their intense and otherwise invisible ultraviolet radiation has stripped away electrons from the atoms in their mutually surrounding gaseous shroud. The blue-green hue inside of NGC 1360 seen here is the strong emission produced as electrons recombine with doubly ionized oxygen atoms. Celestial Surprise: What picture did APOD feature on your birthday? (post 1995)
※ 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！
關於每日一天文圖：每日一天文圖網站是美國國家航空暨太空總署與密西根理工大學提供的服務，網站每天提供一張影像或圖片，並由天文學家撰寫扼要說明其特別之處。