MACS1149-JD1

MACS1149-JD1 (also known as JD1 and PCB2012 3020) is a young galaxy that is known for being one of the farthest known galaxies from Earth. It galaxy was discovered in 2014, and confirmed in 2018. The JD1 galaxy is at a redshift of about z=9.11, or about 13.28 e9ly away from Earth meaning that it formed when the universe was around 500 million years old.

The Carbon and Neon abundance it JD1 is below the star abundance ratio. The Carbon abundance ratio is suggestive of recent star formation and type-ll supernova has enriched the interstellar medium (ISM) with Oxygen but intermediate mass stars have not yet enrich the interstellar medium with Carbon.

Due to a lack of old population stars detected, JD1 is probably a young galaxy.