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CEERS-93316

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Possibly one of the oldest galaxies observed
CEERS-93316
Location of the CEERS-93316 galaxy is in the upper just right-of-center area of the Boötes constellation.
Observation data (J2000 epoch)
ConstellationBoötes/Ursa Major
Right ascension14 19 39.48
Declination52° 56′ 34.92″
Redshift4.912±0.001
Distance
Other designations
CR2-z16-1

CEERS-93316 is a high-redshift galaxy with a spectroscopic redshift z=4.9. Significantly, the redshift that was initially reported was photometric (z = 16.4) and would have made CEERS-93316 the earliest and most distant known galaxy observed.

CEERS-93316 has a light-travel distance (lookback time) of 12.6 billion years, and, due to the expansion of the universe, a present proper distance of 25.7 billion light-years.

Discovery

The candidate high-redshift galaxy CEERS-93316 (RA:14:19:39.48 DEC:+52:56:34.92), in the Boötes constellation, was discovered by the CEERS imaging observing program using the Near Infrared Camera of the James Webb Space Telescope (JWST) in July 2022. CEERS stands for "Cosmic Evolution Early Release Science Survey", and is a deep- and wide-field sky survey program developed specifically for JWST image studies, and is conducted by the CEERS Collaboration.

See also

References

  1. ^ Donnan, C. T.; et al. (November 2022). "The evolution of the galaxy UV luminosity function at redshifts z ≃ 8 - 15 from deep JWST and ground-based near-infrared imaging". Monthly Notices of the Royal Astronomical Society. 518 (4): 6011–6040. arXiv:2207.12356. Bibcode:2023MNRAS.518.6011D. doi:10.1093/mnras/stac3472.
  2. ^ Staff (2008). "Finding the constellation which contains given sky coordinates". DJM.cc. Retrieved 4 August 2022.
  3. ^ Arrabal Haro, Pablo (2023). "Confirmation and refutation of very luminous galaxies in the early Universe". Nature. 622 (7984): 707–711. arXiv:2303.15431. Bibcode:2023Natur.622..707A. doi:10.1038/s41586-023-06521-7. PMID 37579792. S2CID 257766818.
  4. ^ Wright, Edward L. (2022). "Ned Wright's Javascript Cosmolgy Calculator". University of California, Los Angeles. Retrieved 17 April 2023. (H0=67.4 and OmegaM=0.315 (see Table/Planck2018 at "Lambda-CDM model#Parameters" )
  5. Harikane, Yuichi; et al. (2023). "A Comprehensive Study of Galaxies at z ~ 9–16 Found in the Early JWST Data: Ultraviolet Luminosity Functions and Cosmic Star Formation History at the Pre-reionization Epoch". The Astrophysical Journal Supplement Series. 265 (1): 5. arXiv:2208.01612. Bibcode:2023ApJS..265....5H. doi:10.3847/1538-4365/acaaa9. S2CID 251253150.
  6. ^ Amos, Jonathan (26 July 2022). "Scottish astronomers push James Webb deeper back in time". BBC News. Retrieved 4 August 2022.
  7. ^ Tognetti, Laurence (2 August 2022). "The record for the farthest galaxy was just broken again, now just 250 million years after the Big Bang". Universe Today. Retrieved 3 August 2022.
  8. ^ Turner, Ben (1 August 2022). "Webb space telescope has just imaged another most-distant galaxy, breaking its record after a week". Live Science. Retrieved 3 August 2022.
  9. Clery, Daniel (9 August 2022). "Webb telescope reveals unpredicted bounty of bright galaxies in early universe - Star formation after the big bang appears much faster than models had forecast". Science. doi:10.1126/science.ade3381. Retrieved 11 August 2022.

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