"These galaxies are really interesting," said Alison Coil of the University of California, San Diego. "They occur when two big galaxies collide. The merger pushes all the gas into a very small region, which causes an intense burst of star formation. Massive stars burn out quickly, and when they die, they expel their gas as outflowing winds."
"We dubbed them 'WTFs'," said Ray Norris, an astronomer at Western Sydney University and CSIRO in Australia. The acronym stands for 'What's That Farthing?'."
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