NGC 7319 is a galaxy in Pegasus, member of Stephan’s Quintet. Near the nucleus of NGC 7319 a quasar shines brightly. Quasars are generally described as being super luminous galaxies formed during the early universe, but the reason this quasar is so puzzling is that there is very little absorption of its light due to the effect of the gas and dust of NGC 7319. Perhaps, as some astronomers suggest, some quasars are actually the stripped cores of devoured galaxies that have been subsequently spit out by the surviving galaxy such as NGC 7319.
Many other galaxies seem to have a high number of detected quasars near them. This could be an observational bias or perhaps in this case the light of the quasar just happens to shine through a fortuitous window of NGC 7319.
NGC 7318 (also known as UGC 12099/UGC 12100 or HCG 92d/b) are a pair of collidinggalaxies about 300 million light-years away in the Constellation Pegasus. They are members of the famous Stephan’s Quintet.
NGC 7318B has two optical arms emanating from the eastern part of the main body. Since these arms are similar morphologically to the tidal tails of merging galaxies such as NGC 4038/9, it is considered that NGC 7318B itself is a major merger with a retrograde orbit. In order to study the emission-line activity in the tidal arms of NGC 7318B, scientists took CCD narrow-band (Ha ON and OFF) images and then found a large-scale arc in Ha emission which traces closely the arms.