IC 3418

dwarf irregular galaxy

IC 3418 is a dwarf irregular galaxy in the constellation Virgo. It is known for its tidal tail, which formed after the galaxy collided with the Virgo Cluster about 54 million light years from Earth. The galaxy has many starburst regions.[1]

Picture of IC 3418 and its tidal tail

The galaxy is thought to be changing from a dwarf irregular galaxy into a dwarf elliptical galaxy.

Starburst regions

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As the galaxy moves through the intracluster medium (hot gas) of the Virgo Cluster, it pulls gas away from the galaxy leaving it with less gas. The gas that is left in the tidal tail collects and forms starburst regions behind the galaxy.[2]

References

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  1. "Astronomers Discover Star-Studded Galaxy Tail". NASA JPL. June 17, 2010. Archived from the original on 2011-07-21. Retrieved 2011-07-22.
  2. Eric Gershon (12 June 2013). "Galaxy in its death throes may hold clues to birth of dwarf systems". SpaceDaily.