美国国家航空航天局NASA每日一图(天文)-2017年7月12日

2017 July 12

Messier 63: The Sunflower Galaxy
Image Credit & Copyright: Data - Hubble Legacy Archive, Subaru Telescope (NAOJ), Don Goldman
Processing - Robert Gendler, Roberto Colombari, Don Goldman
Explanation: A bright spiral galaxy of the northern sky, Messier 63 is about 25 million light-years distant in the loyal constellation Canes Venatici. Also cataloged as NGC 5055, the majestic island universe is nearly 100,000 light-years across. That's about the size of our own Milky Way Galaxy. Known by the popular moniker, The Sunflower Galaxy, M63 sports a bright yellowish core in this sharp composite image from space- and ground-based telescopes. Its sweeping blue spiral arms are streaked with cosmic dust lanes and dotted with pink star forming regions. A dominant member of a known galaxy group, M63 has faint, extended features that are likely star streams from tidally disrupted satellite galaxies. M63 shines across the electromagnetic spectrum and is thought to have undergone bursts of intense star formation.

Messier 63:向日葵星系
图片来源与版权:数据-哈勃遗产档案,昴星望远镜(街头),Don Goldman
处理- Robert Gendler,Roberto Colombari,Don Goldman
说明:明亮的北方天空的螺旋状星系梅西耶63距离我们大约2500万光年远的忠诚的星座猎犬座。又称为NGC 5055,壮丽的宇宙岛近100000光年。这是关于我们自己的银河系的大小。受欢迎的名字,向日葵星系M63体育的明亮核心来自太空,这种尖锐的复合图像和地面望远镜。它的蓝色旋臂上布满了宇宙尘埃带,点缀着粉红色的恒星形成区。一个已知的星系群的主要成员,M63有微弱,可能是潮汐破坏的卫星星系的恒星流扩展功能。M63闪耀在电磁波频谱中,可能经历了阵阵剧烈的恒星形成。

 

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