Astronomers Find a New Object from the Early Universe Using Webb Data
Homer Dávila Gutierrez, director of SKYCR.ORG, has identified a gravitational arc candidate in the galaxy cluster MACS J0308.9+2645 from public data from the James Webb Space Telescope. The object had not been previously reported and is located at a photometric redshift close to 4.4. The preprint is available on arXiv and the manuscript is under review in Publications of the Astronomical Society…
Astronomers have discovered a new object from the early Universe using data from the James Webb Space Telescope (JWST). The telescope, operational since 2022, has revealed breathtaking views of the cosmos, surpassing the capabilities of the Hubble Space Telescope. One such observation was of galaxy cluster MACS J0308.9+2645, which contained a gravitational lens system that revealed even more distant galaxies existing 13 billion years ago, when the Universe was just 1 billion years old.
Astronomer Homer Dávila Gutierrez, founder and director of SKYCR.ORG, identified another gravitational arc candidate in the cluster. Following a multi-band analysis, Dr. Gutierrez determined the redshift value of the candidate, A1, to be z ≈ 4.4, placing it within the first billion years of the Universe. The object exhibits elongated and curved morphology, making it a characteristic gravitational arc. Its brightness and absence from catalogs also contribute to its significance.
While the analysis is ongoing and requiring further observations, Dr. Gutierrez believes that there could be many more early galaxy candidates hidden within JWST's data. He emphasizes the importance of careful verification and independent remeasurement due to the potential for automated catalog photometry to mislead researchers with extended sources.
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