The Sparkler: Evolved High-redshift Globular Cluster Candidates Captured by JWST

• Published in: Astrophysical journal. Letters Vol. 937; no. 2; p. L35
• Main Authors: Mowla, Lamiya, Iyer, Kartheik G., Desprez, Guillaume, Estrada-Carpenter, Vicente, Martis, Nicholas S., Noirot, Gaël, Sarrouh, Ghassan T., Strait, Victoria, Asada, Yoshihisa, Abraham, Roberto G., Brammer, Gabriel, Sawicki, Marcin, Willott, Chris J., Bradac, Marusa, Doyon, René, Muzzin, Adam, Pacifici, Camilla, Ravindranath, Swara, Zabl, Johannes
• Format: Journal Article
• Language: English
• Published: Austin The American Astronomical Society 01.10.2022; IOP Publishing
• Subjects: Big bang cosmology; Emission spectra; Galaxies; Galaxy clusters; Galaxy evolution; Globular clusters; Globular star clusters; Gravitational lensing; Hubble Space Telescope; Infrared cameras; James Webb Space Telescope; Quenching; Red shift; Space telescopes; Spectral energy distribution; Spectroscopy; Spectrum analysis; Star & galaxy formation; Star formation; Stellar systems

Using data from JWST, we analyse the compact sources (“sparkles”) located around a remarkable z spec = 1.378 galaxy (the ‘Sparkler) that is strongly gravitationally lensed by the z = 0.39 galaxy cluster SMACS J0723.3-7327. Several of these compact sources can be cross-identified in multiple images,...