GS18660

GS18660
Observation data (J2000 epoch)
Right ascension03h 32m 54.877s
Declination-27° 45' 10.40"
Redshift3.076
Characteristics
TypeRing

GS18660 is the most distant ring galaxy currently known, appearing 2.1 billion years after the Big Bang. The object has a redshift of z = 3.076 and contains a rotating disc with a radial expansion velocity of ~200 km/s. The intruder galaxy was identified to be receding at a rate of ~425 km/s.

It was observed on November 26, 2024, as part of the 'Galaxy Assembly with NIRSpec IFS' survey.

References

  1. ↑ "GA-NIFS: The highest-redshift ring galaxy possibly resulting from a head-on collision". Astronomy & Astrophysics. 713: A86. doi:10.1051/0004-6361/202659562. Retrieved 28 October 2026.
  2. ↑ "James Webb telescope discovers most distant ring galaxy ever, hinting at an ultra-rare early universe collision". Live Science. Shreejaya Karantha. Retrieved 28 October 2026.
  3. ↑ "GA-NIFS: The highest-redshift ring galaxy possibly resulting from a head-on collision". Astronomy & Astrophysics. 713: A86. September 2026. doi:10.1051/0004-6361/202659562. Retrieved 28 October 2026.
  4. ↑ "GA-NIFS: The highest-redshift ring galaxy possibly resulting from a head-on collision". Astronomy & Astrophysics. 713: A86. doi:10.1051/0004-6361/202659562. Retrieved 28 October 2026.