Astronomers inspecting an older image taken by James Webb discovered metal-rich galaxies from the early universe.
Astronomers inspecting an image of an early galaxy taken by James Webb have discovered something intriguing at the galaxy’s outer edge. That discovery appeared like a blob of light near the edge of the galaxy. However, upon closer inspection of the target area, which encompassed SPT0418-47, an early galaxy bent into an Einstein Ring by gravitational lensing, revealed a hidden metal-rich galaxy.
The hidden galaxy is believed to have hosted multiple generations of stars despite its young age, estimated to be only 1.4 billion years old. Bo Peng, a doctoral student in astronomy who led the new analysis, says that they found the galaxy to be “super-chemically abundant.” These “metal-rich galaxies” are exceptionally notable because of how much metal material is found within them.
Earlier photos of the same Einstein ring taken by the Atacama Large Millimeter/submillimeter Array in Chile show similar data. However, that data wasn’t strong enough to be taken as anything other than random noise, at least not until James Webb provided more information to help astronomers formulate exactly what they were looking at.
Together, the information from both telescopes helps to paint a complete picture of the metal-rich galaxy that astronomers believe is hiding behind the ring. A paper on the findings was published in
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