馬爾卡里安銀河鏈中的眼睛
The Eyes in Markarian's Galaxy Chain

來源:Mike Selby|發表日期:2024-03-20
在室女座星系團的中心,有一串星系,被稱為 "馬爾卡里安星系鏈"。馬爾卡里安星系鏈中最突出的是這兩個相互作用的星系,NGC 4438 (左)和 NGC 4435 --也被稱為 "眼睛"。這兩個星系相距約 5000 萬光年,在這個清晰的特寫鏡頭中,它們看起來相距約 10 萬光年,但在它們過去的宇宙中,很可能已經接近到相距約 16000 光年的範圍內。近距離接觸產生的引力潮撕裂了它們的恆星、氣體和塵埃。質量較大的 NGC 4438 成功地保留了大部分在碰撞中被撕裂的物質,而較小的 NGC 4435 的物質則更容易流失。宇宙中這一擁擠區域的極深影像還包括許多更遙遠的背景星系。
原文:Across the heart of the Virgo Galaxy Cluster lies a string of galaxies known as Markarian's Chain. Prominent in Markarian's Chain are these two interacting galaxies, NGC 4438 (left) and NGC 4435 - also known as The Eyes. About 50 million light-years away, the two galaxies appear to be about 100,000 light-years apart in this sharp close-up, but have likely approached to within an estimated 16,000 light-years of each other in their cosmic past. Gravitational tides from the close encounter have ripped away at their stars, gas, and dust. The more massive NGC 4438 managed to hold on to much of the material torn out in the collision, while material from the smaller NGC 4435 was more easily lost. The remarkably deep image of this crowded region of the universe also includes many more distant background galaxies.
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