A2744z7p9OD

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A2744z7p9OD
A2744z7p9OD.png
Observation data (Epoch )
Constellation(s) Sculptor
Right ascension 00h 14m 18.25s
Declination −30° 22′ 46″
Number of galaxies7
Redshift 7.88
Binding mass 2x10^15 (halo mass)  M☉

A2744z7p9OD is the highest redshift spectroscopically confirmed protocluster discovered to date.[ when? ] The cluster is located behind the Abell 2744 cluster at a redshift distance of z=7.88. It has a radius of 60 kiloparsecs and within that lies seven currently discovered galaxies making it a overdense region of galaxies. It lacks any strong confirmed Lyman-Alpha emissions. [1]

Contents

Theses protoclusters like A2744z7p9OD resemble what large clusters like the Coma cluster started out as, just with tens of galaxies instead of thousands of galaxies modern large clusters have. Theses clusters reveal how early clusters in the early universe evolved and changed over time. [2] [3]

Environment

It is thought that A2744z7p9OD has a highly neutral environment. In such highly neutral environments, it is expected that large ionizing bubbles are extremely rare even in regions of high overdensity. [2]

List of Galaxies

Below is a list of galaxies located in the A2744z7p9OD protocluster. Galaxies confirmed spectroscopically and photometriclly are included.

Spectroscopically Confirmed

  1. YD4
  2. YD7
  3. ZD6
  4. YD8
  5. ZD2
  6. ZD3
  7. GLASSZ8-2

Photometric sample

  1. YD3
  2. YD6
  3. ZD1
  4. ZD4
  5. ZD5
  6. ZD7
  7. ZD9
  8. ZD10

References

  1. ↑ "ALMA and James Webb Observe the Most Distant Galaxy Protocluster | ALMA Observatory" . Retrieved 2025-04-29.
  2. 1 2 Morishita, Takahiro; Roberts-Borsani, Guido; Treu, Tommaso; Brammer, Gabriel; Mason, Charlotte A.; Trenti, Michele; Vulcani, Benedetta; Wang, Xin; Acebron, Ana; Bahé, Yannick; Bergamini, Pietro; Boyett, Kristan; Bradac, Marusa; Calabrò, Antonello; Castellano, Marco (April 2023). "Early Results from GLASS-JWST. XIV. A Spectroscopically Confirmed Protocluster 650 Million Years after the Big Bang". The Astrophysical Journal Letters. 947 (2): L24. arXiv: 2211.09097 . Bibcode:2023ApJ...947L..24M. doi: 10.3847/2041-8213/acb99e . ISSN   2041-8205.
  3. ↑ "Webb Reveals Early-Universe Prequel to Huge Galaxy Cluster". Webb. Retrieved 2025-04-29.
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