MACS1149-JD1 explained

MACS1149-JD1
Epoch:J2000
Constellation Name:Leo
Z:[1]
H Radial V:[2]
Dist Ly:[3] (co-moving)
[4] (light travel)
Group Cluster:MACS J1149.5+2223
Type:Dwarf
Mass: 
Appmag V:26.8
Size V:0.00075 x 0.00075
Size:3,000 ly (diameter)
Names:[PCB2012] 3020, [KOI2016] HFF4C-YJ1, [ZZI2017] 663[5]

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.[6] The JD1 galaxy is at a redshift of about z=9.11, or about 13.28abbr=unitNaNabbr=unit away from Earth meaning that it formed when the universe was around 500 million years old.[7]

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.[8]

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

See also

External links

Notes and References

  1. The onset of star formation 250 million years after the Big Bang . . Takuya . Hashimoto . etal . 557 . 7705 . 392–395 . May 2018 . 10.1038/s41586-018-0117-z . 2018Natur.557..392H . 1805.05966 . 29769675. 256770802 .
  2. A magnified young galaxy from about 500 million years after the Big Bang . Nature . Wei . Zheng . etal . 489 . 7416 . 406–408 . September 2012 . 10.1038/nature11446 . 2012Natur.489..406Z . 1204.2305 . 22996554. 118335980 .
  3. Web site: Index for [PCB2012] 3020 ]. NASA/IPAC Extragalactic Database . 19 May 2018.
  4. ALMA Finds Most-Distant Oxygen in the Universe . ALMA Observatory . Nicolás . Lira . etal . 15 May 2018 . 6 September 2018 . 2 June 2019 . https://web.archive.org/web/20190602224730/https://www.almaobservatory.org/en/press-release/alma-finds-most-distant-oxygen-in-the-universe/ . dead .
  5. [ZZI2017] 663 . 19 May 2018.
  6. Hashimoto . Takuya . Laporte . Nicolas . Mawatari . Ken . Ellis . Richard S. . Inoue . Akio K. . Zackrisson . Erik . Roberts-Borsani . Guido . Zheng . Wei . Tamura . Yoichi . Bauer . Franz E. . Fletcher . Thomas . Harikane . Yuichi . Hatsukade . Bunyo . Hayatsu . Natsuki H. . Matsuda . Yuichi . May 2018 . The onset of star formation 250 million years after the Big Bang . Nature . en . 557 . 7705 . 392–395 . 10.1038/s41586-018-0117-z . 29769675 . 0028-0836. 1805.05966 . 2018Natur.557..392H .
  7. Web site: NASA Telescopes Spy Ultra-Distant Galaxy - NASA Science . 2024-05-14 . science.nasa.gov . en-US.
  8. Stiavelli . Massimo . The puzzling properties of the MACS1149-JD1 galaxy at z=9.11 . 2023-10-13 . 2308.14696 . Morishita . Takahiro . Chiaberge . Marco . Grillo . Claudio . Leethochawalit . Nicha . Rosati . Piero . Schuldt . Stefan . Trenti . Michele . Treu . Tommaso. The Astrophysical Journal . 957 . 2 . L18 . 10.3847/2041-8213/ad0159 . free . 2023ApJ...957L..18S .

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