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A ring in the distant Universe

The detection of a ring galaxy at a redshift of z = 2.2, potentially a product of a past collision with a companion galaxy, provides new insights on ring formation and the evolution of disk galaxies in the early Universe.

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Fig. 1: Comparison between normal galaxy rings (referred to as secular rings because they form by slow, internal processes, not in the violence of a galactic collision) and a collisional ring galaxy.


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Correspondence to Ronald J. Buta.

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Buta, R.J. A ring in the distant Universe. Nat Astron 4, 925–926 (2020).

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