獅子座三重奏
The Leo Trio
來源：Rabeea Alkuwari｜發表日期：2025-03-21
這個廣受歡迎的星系群在三月分和北半球春季前後的傍晚躍入夜空。 作為著名的獅子座三星系，這三個位於獅子座的壯麗星系聚集在同一個天文視野中。即使是用普通的望遠鏡拍攝，它們也能吸引眾多觀眾，它們分別是 NGC 3628 （左下）、M 66 （右中）和 M 65 （中上）。這三個星系都是大型螺旋星系，但由於它們的星系盤與我們的視線呈不同角度傾斜，因此看起來往往不盡相同。NGC 3628 也被稱為漢堡星系，它的邊緣看起來很誘人，遮擋的塵埃通道穿過它蓬鬆的星系平面。M 66 和 M 65 的星盤都有足夠的傾斜度來展示它們的螺旋結構。 星系群中星系之間的引力相互作用留下了明顯的痕跡，包括 NGC 3628 的潮汐尾跡和扭曲膨脹的圓盤，以及 M 66 的螺旋臂。該區域的壯麗景色在天空中的跨度超過 1 度（兩個滿月）。這幅畫面是用地球上卡達 Sawda Natheel 的望遠鏡拍攝的，在獅子座三重奏約 3000 萬光年的距離上，畫面覆蓋了 50 多萬光年。
原文：This popular group leaps into the early evening sky around the March equinox and the northern hemisphere spring. Famous as the Leo Triplet, the three magnificent galaxies found in the prominent constellation Leo gather here in one astronomical field of view. Crowd pleasers when imaged with even modest telescopes, they can be introduced individually as NGC 3628 (bottom left), M66 (middle right), and M65 (top center). All three are large spiral galaxies but tend to look dissimilar, because their galactic disks are tilted at different angles to our line of sight. NGC 3628, also known as the Hamburger Galaxy, is temptingly seen edge-on, with obscuring dust lanes cutting across its puffy galactic plane. The disks of M66 and M65 are both inclined enough to show off their spiral structure. Gravitational interactions between galaxies in the group have left telltale signs, including the tidal tails and warped, inflated disk of NGC 3628 and the drawn out spiral arms of M66. This gorgeous view of the region spans over 1 degree (two full moons) on the sky. Captured with a telescope from Sawda Natheel, Qatar, planet Earth, the frame covers over half a million light-years at the Leo Trio's estimated 30 million light-year distance.
※ 本文由萌芽機器人自動轉貼自每日一天文圖（Astronomy Picture of the Day，APOD），原文為英文，正體中文是透過 DeepL 翻譯及 OpenCC 進行自動處理，內容僅供參考，若有任何錯誤之處還請見諒！
關於每日一天文圖：每日一天文圖網站是美國國家航空暨太空總署與密西根理工大學提供的服務，網站每天提供一張影像或圖片，並由天文學家撰寫扼要說明其特別之處。