Webb’s mid-infrared view of the very active galaxy Centaurus A
Click for original Webb image. For the original Hubble image, go here.
Cool image time! The false color mid-infrared image above, reduced and annotated to post here, was taken reeently by the mid-infrared instrument on the Webb Space Telescope of the galaxy Centaurus A, 11 million light years away and known for more than a century as an elliptical galaxy crossed by a dark streak of dust, as shown by the inset, an optical Hubble Space Telescope photograph taken in July 2014. More recent research has shown the galaxy is very active, caused by the existence of a supermassive black hole in the center pulling in matter around it.
Webb’s infrared data reveals an entirely different shape. From the press release today:
Webb’s mid-infrared vision highlights the galaxy’s rich dust structures, which glow in intricate shapes that surprise and even perplex astronomers. A warped, parallelogram-like band cuts across the galaxy’s center, while wisps of material stretch outward like cosmic clouds.
An “S” shaped feature, most notable in the image from Webb’s MIRI (Mid-Infrared Instrument), is also unusual and invites questions that need further study to answer. What created this shape? How does the black hole influence it? Is it influenced by merger-induced star formation?
Many of the glowing red points in the MIRI image are dust-rich stars or stellar nurseries, where aging stars are shedding material back into space or new stars are forming. This dust is the raw ingredient for future generations of stars and planets, making it central to the ongoing life cycle of the galaxy.
Once again, this data illustrates the need for astronomers to have telescopes observing in all wavelengths and from space, since a large fraction of the electromagnetic spectrum is blocked by the atmosphere.
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