Star Formation at the Epoch of Reionization with CANUCS: The Ages of Stellar Populations in MACS1149-JD1

Authors :: Maruša Bradač
Victoria Strait
Lamiya Mowla
Kartheik G. Iyer
Gaël Noirot
Chris Willott
Gabe Brammer
Roberto Abraham
Yoshihisa Asada
Guillaume Desprez
Vince Estrada-Carpenter
Anishya Harshan
Nicholas S. Martis
Jasleen Matharu
Adam Muzzin
Gregor Rihtaršič
Ghassan T. E. Sarrouh
Marcin Sawicki
Source :: The Astrophysical Journal Letters, Vol 961, Iss 1, p L21 (2024)
Publication Year :: 2024
Publisher :: IOP Publishing, 2024.
Abstract: We present measurements of stellar populations properties of a z = 9.1 gravitationally lensed galaxy MACS1149-JD1 using deep James Webb Space Telescope NIRISS slitless spectroscopy as well as NIRISS and NIRCam imaging from the CAnadian NIRISS Unbiased Cluster Survey (CANUCS). The galaxy is split into four components. Three magnified ( μ ∼ 11) star-forming components are unresolved, giving intrinsic sizes of

Subjects :: High-redshift galaxies
Gravitational lensing
Reionization
Astrophysics
QB460-466

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