捲曲螺旋星系 M 63
Curly Spiral Galaxy M63

來源:Alberto Pisabarro|發表日期:2025-05-22
梅西耶 63 是北天一個明亮的螺旋星系,它就在附近,距離忠貞座大約 3000 萬光年。這個雄偉的宇宙島也被編入NGC 5055 ,直徑接近 10 萬光年,和我們的銀河系差不多大。它明亮的核心和雄偉的旋臂讓這個星系有了一個響亮的名字--向日葵星系。這次超深度曝光還跟蹤了星系光暈中的微弱環流和捲曲星流。這些星流從星系中心延伸了近 18 萬光年,很可能是 M 63 的衛星星系潮汐擾動的殘留物。在這幅非凡的寬視場影像中,還可以發現M 63 的其他衛星星系,包括矮星系,它們可能在未來的幾十億年中為M 63 的星流做出貢獻。
原文:A bright spiral galaxy of the northern sky, Messier 63 is nearby, about 30 million light-years distant toward the loyal constellation Canes Venatici. Also cataloged as NGC 5055, the majestic island universe is nearly 100,000 light-years across, about the size of our own Milky Way. Its bright core and majestic spiral arms lend the galaxy its popular name, The Sunflower Galaxy. This exceptionally deep exposure also follows faint loops and curling star streams far into the galaxy's halo. Extending nearly 180,000 light-years from the galactic center, the star streams are likely remnants of tidally disrupted satellites of M63. Other satellite galaxies of M63 can be spotted in the remarkable wide-field image, including dwarf galaxies, which could contribute to M63's star streams in the next few billion years.
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