Most of the objects found by the algorithm are common x-ray variable objects. Seyfert 1 galaxies, active galactic nuclei (AGNs), and quasars are all powered by a similar process in which matter from a a galaxy falls into the central supermassive black hole. Almost all of the stellar objects were M- or K-type stars that have well known x-ray variability.
These stars show the effect that line of sight can have on astronomical observations. They were discovered close together, with one brightening as the other dimmed. It was determined that the two stars are actually separated by many light-years and could not have been interacting in the period of time that they were observed.
Optically, these two galaxies appear to be colliding; however only one is emitting x-rays contrary to galaxy merger models. Additionally, the source of the x-rays moved by an apparent 1 kly in about 2 years. This means it is likely two separate sources that just happen to emit at different times, sometimes called the Christmas tree effect.
One of the identified variable stars was an A-type star, much hotter than standard x-ray variable stars. Other x-ray emitting A-type stars have been found, though the cause of the x-ray emission is still unknown. From the available data, we cannot tell if the emission is due to a hidden compact companion or some other mechanism.