韋伯望遠鏡拍攝的紅蜘蛛行星狀星雲
Red Spider Planetary Nebula from Webb
發表日期：2026-02-03
行星狀星雲編織的網何其錯綜複雜。紅蜘蛛行星狀星雲展現了普通恆星拋射外層氣體並演化為白矮星時可能形成的複雜結構。 這顆編號NGC 6537 的雙葉對稱行星狀星雲，孕育著已觀測到的最熾熱白矮星之一，很可能屬於雙星系統。從核心恆星噴湧的內部恆星風，測得速度超過每秒 1000 公里。這些恆星風推動星雲膨脹，沿星雲壁面流動，引發熾熱氣體與塵埃的波浪式碰撞。 被困於這些碰撞激波中的原子會輻射出光線，詹姆斯·韋伯太空望遠鏡拍攝的這張偽彩色紅外影像正是其呈現。紅蜘蛛星雲位於人馬座方向，其確切距離雖未明確，但有研究估計約為 4000 光年。
原文：Oh what a tangled web a planetary nebula can weave. The Red Spider Planetary Nebula shows the complex structure that can result when a normal star ejects its outer gases and becomes a white dwarf star. Officially tagged NGC 6537, this two-lobed symmetric planetary nebula houses one of the hottest white dwarfs ever observed, probably as part of a binary star system. Internal winds flowing out from the central stars, have been measured in excess of 1,000 kilometers per second. These winds expand the nebula, flow along the nebula's walls, and cause waves of hot gas and dust to collide. Atoms caught in these colliding shocks radiate light shown in the featured false-color infrared picture by the James Webb Space Telescope. The Red Spider Nebula lies toward the constellation of the Archer (Sagittarius). Its distance is not well known but has been estimated by some to be about 4,000 light-years.
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