HD 61005 的行星圈
The Astrosphere of HD 61005
發表日期：2026-03-06
年輕恆星會吹出氣泡嗎？大圖展示了智利托洛洛山美洲際天文臺觀測到的恆星區域，插圖則突出了HD 61005 ——一顆與太陽相似的恆星，距離我們僅 120 光年。 這顆僅有約 1 億歲、遠比太陽年輕的恆星，正噴射著高速高密度的恆星風，將周圍較冷的塵埃與氣體推向外層，形成名為"恆星球"的泡狀結構。 這顆恆星吹出的氣泡由錢德拉X 射線天文臺探測到，其直徑約為地日距離的 200 倍。我們的太陽也有一個名為日球層的氣泡，它保護著行星免受宇宙輻射的侵害。插圖中還展示了哈勃望遠鏡觀測到的恆星形成殘餘碎片。這些碎片呈現出翅膀狀，因此這顆恆星獲得了"飛蛾"的暱稱。
原文：Do young stars blow bubbles? The larger view shows a stellar field observed with the Cerro Tololo Inter-American Observatory in Chile, and the inset highlights HD 61005, a star like our Sun, only 120 light-years away. Much younger than the Sun, at just about 100 million years old, it blows a fast and dense stellar wind that pushes out the cooler dust and gas that surrounds it, forming a bubble called an astrosphere. The star-blown bubble was detected with the Chandra X-ray Observatory, and it has a diameter roughly 200 times the Earth-Sun distance. Our Sun has a bubble too, called the heliosphere, which protects the planets from cosmic radiation. Also shown in the inset is debris left behind from star formation, observed by Hubble. The debris appears as wings, giving the star its nickname: the Moth.
※ 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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