NGC 5135 is a barred spiral, similar in some ways to NGC 1365. Both galaxies are members of the IRAS "Bright Galaxy Sample," meaning that they are very luminous in the infrared as a result of vigorous star-forming activity. Both have very strong bars. Both harbor an active galactic nucleus at their core. (All large galaxies are believed to have a supermassive black hole at their core, but only a small fraction of those black holes are actually being fed; it is the feeding of the black hole that triggers the AGN.) And, both have been observed by Katie Chynoweth and I as part of our (sadly unfunded) project to build maps of the relative Doppler shifts and spectral line intensities of the ionized gas throughout the galaxy.
This image was taken in April 2007 at the CTIO 0.9m, on the same run as the image of ESO 264-G057 that I posted previously.