The James Webb Space Telescope (JWST) has made an incredible discovery, capturing an image of a previously elusive dusty galaxy, AzTECC71. The galaxy, believed to be a stellar nursery, has previously been detected only as a glowing blob through ground-based telescopes and then disappeared from images taken by the Hubble Space Telescope. Now, it has reappeared in a distinct form through the lens of the JWST.
According to Phys.org, AzTECC71’s existence challenges previous assumptions about the rarity of such galaxies in the early universe, suggesting they may be more common than initially thought. Researchers from the COSMOS-Web collaboration believe that the galaxy was formed approximately 1 billion years after the Big Bang and is actively creating hundreds of new stars on an annual basis. This revelation challenges the perception of these enigmatic objects, hinting that there may be many more galaxies that have been hidden from observation.
The discovery of AzTECC71 is not the only one. The COSMOS-Web project, led by Caitlin Casey of the University of Texas at Austin, aims to map up to one million galaxies within a specific region of the sky. The project has already identified more than a dozen additional candidates, contributing to a better understanding of galaxy evolution.
Dusty star-forming galaxies like AzTECC71 are difficult to observe in optical light due to the absorption of starlight by dust. The JWST, with its enhanced sensitivity and capability to operate in the infrared spectrum, helps counter this challenge by providing a groundbreaking opportunity to study these heavily dust-obscured galaxies’ optical and infrared properties.
The JWST has the ability to pierce through thick dusty veils such as the one surrounding AzTECC71 to explore hidden aspects of the universe. Additionally, this discovery may prompt a reevaluation of the understanding of the early universe, suggesting it might have been significantly dustier than previously believed.
Overall, the discovery of AzTECC71 is an exciting one, presenting new and groundbreaking insights into the obscured realms of cosmic evolution. As the COSMOS-Web project continues its observations, astronomers anticipate unveiling more of these JWST-faint galaxies and gaining deeper insights into hidden aspects of cosmic evolution.
The findings of the study were published in the Astrophysical Journal, adding a valuable piece to the cosmic puzzle as researchers explore more of these hidden galaxies across the universe.
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