韦伯的《侧轮星系》
(原标题: The Cartwheel Galaxy from Webb)
2022-08-24
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对一些人来说，它看起来像一个车轮。事实上，由于它的外观，中心星系的存在，以及它与看起来像车轮辐条的星系的联系，右边的星系被称为车轮星系。然而，对其他人来说，这看起来像是星系之间复杂的相互作用，等待解释。和左边的两个星系一样，侧轮星系也是距离我们大约5亿光年远的雕刻家星座星系群的一部分。这个大星系的边缘跨度超过10万光年，由恒星形成区域组成，这些区域充满了非常明亮和巨大的恒星。侧轮星系的环状形状是由一个较小的星系穿过一个较大的星系而引起的引力破坏的结果，它压缩了星际气体和尘埃，导致恒星形成波像池塘表面的涟漪一样移动出去。韦伯太空望远镜最近拍摄的车轮星系的特色图像不仅揭示了恒星形成的新细节，而且还揭示了星系中心黑洞附近的活动。教师和学生：在课堂上使用APOD的想法
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To some, it looks like a wheel of a cart. In fact, because of its outward appearance, the presence of a central galaxy, and its connection with what looks like the spokes of a wheel, the galaxy on the right is known as the Cartwheel Galaxy. To others, however, it looks like a complicated interaction between galaxies awaiting explanation. Along with the two galaxies on the left, the Cartwheel is part of a group of galaxies about 500 million light years away in the constellation Sculptor. The large galaxy's rim spans over 100,000 light years and is composed of star forming regions filled with extremely bright and massive stars. The Cartwheel's ring-like shape is the result of gravitational disruption caused by a smaller galaxy passing through a large one, compressing the interstellar gas and dust and causing a star formation wave to move out like a ripple across the surface of a pond. The featured recent image of the Cartwheel Galaxy by the Webb Space Telescope reveals new details not only about where stars are forming, but also about activity near the galaxy's central black hole. Teachers & Students: Ideas for utilizing APOD in the classroom