Interacting Galaxies Arp 142 (NIRCam)
Interacting Galaxies Arp 142 (NIRCam)
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At the center of this near- and mid-infrared image from the Webb Telescope is the distorted spiral galaxy NGC 2936, known as the Penguin. To its left is the compact elliptical galaxy NGC 2937, referred to as the Egg. These two galaxies are locked in an active embrace.
The pair, known jointly as Arp 142, made their first pass between 25 and 75 million years ago — causing ‘fireworks’, or new star formation, in the Penguin. In extreme cases, such galaxy mergers can lead to the formation of thousands of new stars per year over a few million years. For the Penguin, studies have shown that approximately 100 to 200 stars are formed annually. By comparison, our Milky Way, which is not undergoing a similar interaction, forms only about six to seven new stars per year.
The background of this image is overflowing with far more distant galaxies, demonstrating the incredible sensitivity and resolution of Webb's infrared cameras.
Arp 142 is located 326 million light-years from Earth in the constellation Hydra.
Image courtesy of NASA, ESA/Webb
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