Maisie's Galaxy
| Maisie's Galaxy | |
|---|---|
A picture of Maisie's galaxy made by combining images from three different filters. | |
| Observation data (J2000 epoch) | |
| Constellation | Boötes |
| Right ascension | 14h 19m 46.36s |
| Declination | +52° 56′ 32.8″ |
| Redshift | 11.4 |
| Characteristics | |
| Type | Lyman-break galaxy |
| Other designations | |
| CEERS J141946.36+525632.8, [HOO2023] CR2-z12-1 | |
Maisie's Galaxy (also known as CEERS J141946.36+525632.8 or CR2-z12-1) is a distant galaxy located in constellation Boötes with a redshift of z=11.4 dating from approximately 390 million years after the Big Bang.
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, Steve Finkelstein, an astronomer at the University of Texas at Austin.[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
- ^ 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.
- ^ "Webb Spots Candidate for Most Distant Known Galaxy". Sci.News. 2022-08-04. Retrieved 2023-11-13.
- ^ Finkelstein, Steven L.; Bagley, Micaela B.; Arrabal Haro, Pablo; 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.
- ^ Arrabal Haro, Pablo; Dickinson, Mark; Finkelstein, Steven L.; Kartaltepe, Jeyhan S.; Donnan, Callum T.; Burgarella, Denis; Carnall, Adam C.; Cullen, Fergus; Dunlop, James S.; Fernández, Vital; Fujimoto, Seiji; Jung, Intae; Krips, Melanie; Larson, Rebecca L.; Papovich, Casey (2023-10-01). "Confirmation and refutation of very luminous galaxies in the early Universe". Nature. 622 (7984): 707–711. arXiv:2303.15431. doi:10.1038/s41586-023-06521-7. ISSN 1476-4687.