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Maisie's Galaxy

From Wikipedia, the free encyclopedia

Maisie's Galaxy
Maisie’s Galaxy and CEERS-93316 shown at six infrared wavelengths, with small circles highlighting each object.
Observation data (J2000 epoch)
Right ascension214.943153
Declination52.942442
Redshift11.4
Other designations
CEERS J141946.36+525632.8, [HOO2023] CR2-z12-1

Maisie's Galaxy (also known as CEERS J141946.36+525632.8) is a distant galaxy located at z=11.4 that existed 390 million years after the beginning of the universe.

Background

Discovered in 2022 using the James Webb Space Telescope (JWST) in the CEERS field, Maisie's Galaxy has high star formation rates.[1][2] It was named after the nine-year-old daughter of the person who discovered it.[3]

In February 2023, the CEERS teams followed up their high-redshift candidates with observatory’s NIRSpec (Near-Infrared Spectrograph) instrument to measure precise, spectroscopic redshifts. One candidate (Maisie’s Galaxy) has been confirmed to be at redshift 11.4 (when the universe was 390 million years old), while the second candidate was discovered to actually be at a lower redshift of 4.9 (when the universe was 1.2 billion years old.)[4]

See also

References

  1. ^ Lea, Robert (2023-08-17). "James Webb Space Telescope confirms 'Maisie's galaxy' is one of the earliest ever seen". Space.com. Retrieved 2023-11-13.
  2. ^ "Webb Spots Candidate for Most Distant Known Galaxy". Sci.News. 2022-08-04. Retrieved 2023-11-13.
  3. ^ Finkelstein, Steven L.; Bagley, Micaela B.; Haro, Pablo Arrabal; Dickinson, Mark; Ferguson, Henry C.; Kartaltepe, Jeyhan S.; Papovich, Casey; Burgarella, Denis; Kocevski, Dale D.; Huertas-Company, Marc; Iyer, Kartheik G.; Koekemoer, Anton M.; Larson, Rebecca L.; Pérez-González, Pablo G.; Rose, Caitlin (2022-12-01). "A Long Time Ago in a Galaxy Far, Far Away: A Candidate z ∼ 12 Galaxy in Early JWST CEERS Imaging". The Astrophysical Journal Letters. 940 (2): L55. arXiv:2207.12474. doi:10.3847/2041-8213/ac966e. ISSN 2041-8205.
  4. ^ "James Webb Space Telescope". blogs.nasa.gov. 2023-12-21. Retrieved 2024-02-02.
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This page was last edited on 14 April 2024, at 20:14
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