B93：黑暗的星际幽灵
(原标题: B93: A Dark Interstellar Ghost)
2026-02-20
浏览次数: 1819
“银河系中的幽灵……”拍摄这张巴纳德93 （B93）惊人照片的天体摄影师克里斯蒂安·伯廷科特说。B93是巴纳德暗星云目录中的第93个条目，位于小人马座恒星云（梅西耶24）内，它的黑暗与背景中明亮的恒星和气体形成鲜明对比。在某些方面，B93真的很像一个幽灵，因为它含有气体和尘埃，这些气体和尘埃是由于恒星的死亡而分散的，比如超新星。B93看起来像一个黑暗的空洞，不是因为它是空的，而是因为它的尘埃阻挡了更远的恒星和发光气体发出的光。像其他暗星云一样，B93中的一些气体，如果密度和质量足够大，最终会在引力作用下凝聚形成新的恒星。如果是这样，那么一旦这些恒星点燃，B93将从黑暗的幽灵变成新生恒星的明亮摇篮。
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"A ghost in the Milky Way…” says Christian Bertincourt, the astrophotographer behind this striking image of Barnard 93 (B93). The 93rd entry in Barnard’s Catalogue of Dark Nebulae, B93 lies within the Small Sagittarius Star Cloud (Messier 24), where its darkness stands in stark contrast to bright stars and gas in the background. In some ways, B93 is really like a ghost, because it contains gas and dust that was dispersed by the deaths of stars, like supernovas. B93 appears as a dark void not because it is empty, but because its dust blocks the light emitted by more distant stars and glowing gas. Like other dark nebulas, some gas from B93, if dense and massive enough, will eventually gravitationally condense to form new stars. If so, then once these stars ignite, B93 will transform from a dark ghost into a brilliant cradle of newborn stars.
© Christian Bertincourt; Text: Keighley Rockcliffe (NASA GSFC, UMBC CSST, CRESST II)