MACS1149-JD

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 was discovered in 2014 and confirmed in 2018. The JD1 galaxy is at a redshift of about z=9.11, or about away from Earth meaning that it formed when the universe was around 500 million years old.

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Vinony's link graph records 190 inbound references to MACS1149-JD, and connects out to epoch, Earth and universe.

It sits within the topics Dwarf galaxies and Leo (constellation).

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Key facts

Galaxy.name: MACS1149-JD1
Galaxy.image: Hubble and ALMA image of MACS J1149.5+2223.jpg
Galaxy.caption: Hubble and ALMA image of galaxy cluster MACS J1149.5+2223 with an inset of MACS1149-JD1
Galaxy.epoch: J2000
Galaxy.constellation name: Leo
Galaxy.dist_ly: (co-moving) (light travel)
Galaxy.group_cluster: MACS J1149.5+2223
Galaxy.type: Dwarf
Galaxy.appmag_v: 26.8
Galaxy.size_v: 0.00075 x 0.00035
Galaxy.size: 3,000 ly (diameter)
Galaxy.names: [PCB2012] 3020, [KOI2016] HFF4C-YJ1, [ZZI2017] 663

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Wikidata facts

Instance of: galaxy
Constellation: Leo
Image: Annotated montage - galaxy cluster MACS J1149+2223 and high-z galaxy MACS1149-JD 01.jpg

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apparent magnitude: 25.80
right ascension: 177.3899333
declination: 22.4127167
epoch: J2000.0
redshift: 9.2
Commons category: MACS1149-JD1
radial velocity: 294084

Sources (1)

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Encyclopedic overview

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Contents

See also
References
External links

The carbon and neon abundances of JD1 are below the solar abundance ratio. The under-abundance of carbon suggests recent star formation where a Type II supernova enriched the interstellar medium (ISM) with oxygen, but intermediate mass stars have not yet enriched the ISM with carbon.

Excerpted from Wikipedia’s “MACS1149-JD” article, available under the CC BY-SA 4.0 licence.