NGC 1566:像西班牙舞者的旋涡星系
影像来源:NASA, ESA, Hubble; Processing & Copyright: Leo Shatz

说明:如果这个旋涡星系不够完美,那么它至少是最上镜的星系之一。NGC 1566是一座包含数十亿颗恒星的岛宇宙,位于剑鱼座方向、距离我们约4千万光年远处,它展示了一幅绚丽的正向视图。NGC 1566被归类为一种宏象旋涡结构,它呈现了两条交织着亮蓝色星团和黑暗宇宙尘埃带、显著而优美的旋臂。许多哈勃太空望远镜拍摄的NGC 1566影像被用来研究恒星的形成、超新星和旋涡星系异常活跃的中心。其中一些影像在线存储于哈勃遗珍档案中,由一位勤劳的业余爱好者免费下载、组合并进行数字处理,从而制作出这幅特征影像。NGC 1566闪耀的中心使这个旋涡星系成为距离我们最近且最明亮的赛弗特星系之一,该星系的中心可能有一个特大质量黑洞,对周围的恒星和气体造成严重破坏。
翻译:北京天文馆

NGC 1566: The Spanish Dancer Spiral Galaxy
Image Credit: NASA, ESA, Hubble; Processing & Copyright: Leo Shatz

Explanation: If not perfect, then this spiral galaxy is at least one of the most photogenic. An island universe containing billions of stars and situated about 40 million light-years away toward the constellation of the Dolphinfish (Dorado), NGC 1566 presents a gorgeous face-on view. Classified as a grand design spiral, NGC 1566’s shows two prominent and graceful spiral arms that are traced by bright blue star clusters and dark cosmic dust lanes. Numerous Hubble Space Telescope images of NGC 1566 have been taken to study star formation, supernovas, and the spiral’s unusually active center. Some of these images, stored online in the Hubble Legacy Archive, were freely downloaded, combined, and digitally processed by an industrious amateur to create the featured image. NGC 1566’s flaring center makes the spiral one of the closest and brightest Seyfert galaxies, likely housing a central supermassive black hole wreaking havoc on surrounding stars and gas.
Astronomy Picture of the Day 07/02/2019