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New galaxies defy convention

New galaxies defy convention

Some galaxies are harder to classify than others, and Hubble’s trusty Wide Field Camera 3 (WFC3) has captured a striking view of two such interacting galaxies located about 60-million light-years away in the constellation of Leo (The Lion).
The more diffuse and patchy blue glow covering the right side of the frame is known as NGC 3447 — sometimes NGC 3447B for clarity, as the name NGC 3447 can apply to the overall duo. The smaller clump to the upper left is known as NGC 3447A.
Overall, it is known that NGC 3447 comprises a couple of interacting galaxies, but it’s not clear unsure what each looked like before they began to tear one another apart.
The two sit so close that they are strongly influenced and distorted by the gravitational forces between them, causing the galaxies to twist themselves into the unusual and unique shapes seen here.
NGC 3447A appears to display the remnants of a central bar structure and some disrupted spiral arms, both properties characteristic of certain spiral galaxies. Some identify NGC 3447B as a former spiral galaxy, while others categorise it as being an irregular galaxy.

Image credit: ESA/Hubble & NASA