NGC 5098 belongs to the NGC 5098galaxy group which is located some 560 millionlight-years away.[10] They are the central galaxy pair, first identified by Ramella et al. 1995 "their group 80."[11] NGC 5098 NED01 is the brighter and larger of the two, showingoptical magnitudes ofMB = −21.131 andMV = −22.097, as compared toMB = −20.845 andMV = −21.770 for NGC 5098 NED02, which themagnitudes were calculated fromSloan Digital Sky Survey by Adelman-McCarthy[12] and converted to Johnson filter system via the relations provided by Smith et al.[13]
NGC 5098 NED01 hosts an extendedradio source, B2 1317+33 which was detected at severalfrequencies.[14] A study showed there is evidence of gas swooshing andactive galactic nucleus (AGN) heating up which the most likely contributor is the nearby galaxy, NGC 5098 NED02 which is being stripped of its gaseousatmosphere.[15] Significant cavities are present in the central region, which two distinctive bubbles are located north and northeast. They are similar to X-ray observations of other galaxies, groups andclusters.[15] These are formed when active galactic nucleus (AGN) jets push into local ICM, evacuating cavities and creating bright rims of X-ray emission from displaced gas.[15]
A plume ofemission is seen extending northeast from NGC 5098 NED01,[16] exhibiting aspiral arm morphology which originates east from the galaxy and wrapping around to the north. This presence of a feature indicates NGC 5098 NED01 is indeedinteracting with NGC 5098 NED02.[15]
Apart from that, there is a sharpsurface brightness to west, southwest and south, which is approximately 28 kpc from the central AGN of NGC 5098 NED01.[15] It appears to go eastwards and define the outer boundaries of the arm, adding to the overall impression of the spiral pattern in diffuse emission. The edges are quite similar to features that are seen from cold fronts generated by gas sloshing in observations[17] and simulations of galaxy clusters and groups.[18]
A study shows that NGC 5098 NED02 does not show any traces of associate emission inX-rays, implying it was stripped of gas.[15] It is possible NGC 5098 NED02 after beingram-pressured stripped and passing east of NGC 5098 NED01 might have circled around it and now moving east, creating a conical wake in diffuse emission.[18]
