Maisie's Galaxy
{{Infobox galaxy|name=Maisie's Galaxy|image=Ages of Candidate Cosmic Ancients (Stamps dropout press version noz).png|caption=Maisie’s Galaxy and CEERS-93316 shown at six infrared wavelengths, with small circles highlighting each object.|epoch=J2000|ra=214.943153|dec=52.942442|z=11.4|names=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.{{Cite web |last=Lea |first=Robert |date=2023-08-17 |title=James Webb Space Telescope confirms 'Maisie's galaxy' is one of the earliest ever seen |url=https://www.space.com/jwst-maisie-galaxy-earliest-observed |access-date=2023-11-13 |website=Space.com |language=en}}{{Cite web |last=|first=|date=2022-08-04 |title=Webb Spots Candidate for Most Distant Known Galaxy |url=https://www.sci.news/astronomy/maisies-galaxy-11066.html |access-date=2023-11-13 |website=Sci.News |language=en-US}} It was named after the nine-year-old daughter of the person who discovered it.{{Cite journal |last=Finkelstein |first=Steven L. |last2=Bagley |first2=Micaela B. |last3=Arrabal Haro |first3=Pablo |last4=Dickinson |first4=Mark |last5=Ferguson |first5=Henry C. |last6=Kartaltepe |first6=Jeyhan S. |last7=Papovich |first7=Casey |last8=Burgarella |first8=Denis |last9=Kocevski |first9=Dale D. |last10=Huertas-Company |first10=Marc |last11=Iyer |first11=Kartheik G. |last12=Koekemoer |first12=Anton M. |last13=Larson |first13=Rebecca L. |last14=Pérez-González |first14=Pablo G. |last15=Rose |first15=Caitlin |date=2022-12-01 |title=A Long Time Ago in a Galaxy Far, Far Away: A Candidate z ∼ 12 Galaxy in Early JWST CEERS Imaging |url=https://iopscience.iop.org/article/10.3847/2041-8213/ac966e |journal=The Astrophysical Journal Letters |volume=940 |issue=2 |pages=L55 |doi=10.3847/2041-8213/ac966e |issn=2041-8205 |doi-access=free|arxiv=2207.12474 }}
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).{{Cite journal |last=Arrabal Haro |first=Pablo |last2=Dickinson |first2=Mark |last3=Finkelstein |first3=Steven L. |last4=Kartaltepe |first4=Jeyhan S. |last5=Donnan |first5=Callum T. |last6=Burgarella |first6=Denis |last7=Carnall |first7=Adam C. |last8=Cullen |first8=Fergus |last9=Dunlop |first9=James S. |last10=Fernández |first10=Vital |last11=Fujimoto |first11=Seiji |last12=Jung |first12=Intae |last13=Krips |first13=Melanie |last14=Larson |first14=Rebecca L. |last15=Papovich |first15=Casey |date=2023-10-01 |title=Confirmation and refutation of very luminous galaxies in the early Universe |url=https://www.nature.com/articles/s41586-023-06521-7 |journal=Nature |volume=622 |issue=7984 |pages=707-711 |doi=10.1038/s41586-023-06521-7 |issn=1476-4687 |doi-access=free|arxiv=2303.15431 }}
See also
References
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Category:Galaxies discovered in 2022
Category:Discoveries by the James Webb Space Telescope
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