Arp 142：来自韦伯的相互作用星系
(原标题: Arp 142: Interacting Galaxies from Webb)
2024-07-30
浏览次数: 17
对一些人来说，它看起来像企鹅。但对于研究宇宙的人来说，这是两个大星系相互作用的有趣例子。就在几亿年前，上部的NGC 2936可能是一个正常的螺旋星系：旋转，创造恒星，并关注自己的事业。然后它离下面的大质量椭圆星系NGC 2937太近了，然后俯冲了下去。它们一起被称为Arp 142，在这张新的韦伯红外图像中出现，而哈勃可见光图像则出现在比较中。由于这种紧密的引力相互作用，NGC 2936不仅发生了偏转，而且发生了扭曲。当大质量星系彼此靠近时，气体通常会被压缩，从而形成新的恒星。在上面星系的右边，一群年轻的恒星看起来像企鹅的鼻子，而在螺旋的中心，明亮的恒星一起看起来像一只眼睛。在10亿年前，这两个星系可能会合并成一个更大的星系。探索你的宇宙：随机APOD生成器
查看原文解释
To some, it looks like a penguin. But to people who study the universe, it is an interesting example of two big galaxies interacting. Just a few hundred million years ago, the upper NGC 2936 was likely a normal spiral galaxy: spinning, creating stars, and minding its own business. Then it got too close to the massive elliptical galaxy NGC 2937, below, and took a dive. Together known as Arp 142, they are featured in this new Webb infrared image, while a visible light Hubble image appears in comparison. NGC 2936 is not only being deflected, but distorted, by this close gravitational interaction. When massive galaxies pass near each other, gas is typically condensed from which new stars form. A young group of stars appears as the nose of the penguin toward the right of the upper galaxy, while in the center of the spiral, bright stars together appear as an eye. Before a billion years, the two galaxies will likely merge into one larger galaxy. Explore Your Universe: Random APOD Generator