Astrophysics (Index)About

Toomre sequence

(model relating galaxy mergers to observation)

The Toomre sequence is an ordered list of eleven interacting galaxies that demonstrate stages of galaxy mergers, the list assembled by astrophysicists Alar Toomre and Juri Toomre in the 1970s while exploring the mechanics of galaxy mergers through simulation. Their simulation-generated images showed features such as tidal tails observed in observed galaxy interactions. The term Toomre sequence is also likely used for newer lists created to demonstrate the same phenomenon.

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