Copyright:Philippe Durville
原文:
This popular group is famous as the Leo Triplet – a gathering of three magnificent galaxies in one field of view. Crowd pleasers when imaged with even modest telescopes, they can be introduced individually as NGC 3628 (left), M66 (bottom right), and M65 (top). All three are large spiral galaxies but they tend to look dissimilar because their galactic disks are tilted at different angles to our line of sight. NGC 3628 is seen edge-on, with obscuring dust lanes cutting across the plane of the galaxy, while the disks of M66 and M65 are both inclined enough to show off their spiral structure. Gravitational interactions between galaxies in the group have also left telltale signs, including the warped and inflated disk of NGC 3628 and the drawn out spiral arms of M66. This gorgeous view of the region spans about one degree (two full moons) on the sky. The field covers over 500 thousand light-years at the trio’s estimated distance of 30 million light-years.
中文翻譯:
這個受歡迎的星系群被稱為獅子三重星系（Leo Triplet）——三個壯麗的星系在視野中聚集。這些星系在即便是普通望遠鏡下成像時都吸引了不少觀眾，它們分別是 NGC 3628（左）、M66（右下）和 M65（右上）。這三個都是大型螺旋星系，但因為它們的星系盤相對於我們的視線角度不同，顯得各有特色。NGC 3628 以邊緣視角呈現，隱藏著穿越星系平面的塵埃帶，而 M66 和 M65 的星系盤則傾斜得可以展示其螺旋結構。
這個星系群之間的重力交互作用也留下了可見的痕跡，包括 NGC 3628 的扭曲和膨脹的星系盤，以及 M66 的延伸螺旋臂。這幅壯麗的視野在天空中約佔據一度（相當於兩個滿月的大小）。在三個星系的預計距離約為 3000 萬光年，這一範圍跨越超過 50 萬光年。
#獅子三重星系 #LeoTriplet #NGC3628 #M66 #M65 #螺旋星系 #天文攝影 #宇宙探索 #星際之美 #星系互動
來源:NASA每日圖片
