NGC 4214

This Magellanic Irregular galaxy has star formation in clumps all across its center. The picture shows the 2 cm radio emission, measured at the Very Large Array; the bright knots are probably super-star clusters. The star formation in the northern section has a form of an arc around a hole. There is a very bright UV source in the hole which may have created the hole, by blowing out the gas, and triggered star formation in the arc by compressing and heating the gas there.
(see Hubble images)