PEARLSDG
The Prime Extragalactic Areas for Reionization and Lensing Science (PEARLS) survey is a deep-field imaging program conducted with the James Webb Space Telescope (JWST). The survey aims to study the earliest galaxies formed after the Big Bang.[1][2]
Discoveries
PEARLSDG dwarf galaxy
In January 2024, a research team of astronomers led by Timothy Carleton at Arizona State University (ASU) discovered a small dwarf galaxy, PEARLSDG.[3] Using NASA's James Webb Space Telescope, the team detected a faint glow within a group of galaxies approximately 98 million light-years away.[4][5] Typical dwarf galaxies contain far fewer stars than the Milky Way.[6]
PEARLSDG is notable as a **potentially isolated quiescent dwarf galaxy**, meaning it is not interacting with nearby galaxies and shows little or no ongoing star formation.[7]
References
- ↑ Carleton, Timothy; Ellsworth-Bowers, Timothy; Windhorst, Rogier A.; Cohen, Seth H.; Conselice, Christopher J.; Diego, Jose M.; Zitrin, Adi; Archer, Haylee N.; McIntyre, Isabel; Kamieneski, Patrick; Jansen, Rolf A.; Summers, Jake; D'Silva, Jordan C. J.; Koekemoer, Anton M.; Coe, Dan; Driver, Simon P.; Frye, Brenda; Grogin, Norman A.; Marshall, Madeline A.; Nonino, Mario; Pirzkal, Nor; Robotham, Aaron; Ryan, Russell E.; Ortiz, Rafael; Tompkins, Scott; Willmer, Christopher N. A.; Yan, Haojing; Holwerda, Benne W. (2024). "JWST's PEARLS: Resolved study of the stellar and dust components in starburst galaxies at cosmic noon". Astronomy & Astrophysics. 961 (2): L37. arXiv:2309.16028. Bibcode:2024ApJ...961L..37C. doi:10.3847/2041-8213/ad1b56.
- ↑ NASA (December 14, 2022). "Webb Glimpses Field of Extragalactic PEARLS Studded with Galactic Diamonds". NASA Science. Retrieved 2025-12-03.
- ↑ "Isolated Dwarf Galaxy PEARLSDG Spotted by Webb". EarthSky. January 2024. Retrieved 2025-12-03.
- ↑ "Dwarf galaxy that shouldn't exist found on Webb Telescope imaging". SpaceChatter. February 5, 2024. Retrieved 2025-12-03.
- ↑ Carleton, Timothy (2024). "PEARLS: A Potentially Isolated Quiescent Dwarf Galaxy with a Tip of the Red Giant Branch Distance of 30 Mpc". Astrophysical Journal Letters. 961 (2): L37. arXiv:2309.16028. Bibcode:2024ApJ...961L..37C. doi:10.3847/2041-8213/ad1b56.
- ↑ George, Koshy; Zingade, Kshama (2015). "Dwarf Galaxies and Star Formation". Astronomy & Astrophysics. 583: A103. doi:10.1051/0004-6361/201424826. Retrieved 2025-12-03.
- ↑ "Team of astronomers led by ASU scientist discovers galaxy that shouldn't exist". Arizona State University News. January 28, 2024. Retrieved 2025-12-03.
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