2MASX J04443770−2809544,LEDA 745026, OF −271, MRSS 421−046487, TXS 0442−028, G4Jy 0492, PAPER J071.19−28.21, Cul 0442−082[1]
PKS 0442−28 is a narrow-lineradio galaxy located in the constellation ofEridanus. Theredshift of the galaxy is (z) 0.151[1] and it was first discovered as anastronomical radio source by astronomers lead by J.G. Bolton in December 1965.[2]
The host galaxy has a shell-like structure 50kiloparsecs from the central nucleus in a southwest direction. The shell has an estimatedsurface brightness of around 25.7magnitude per arcsecond. Several other galaxies are found within the field of the host galaxy, suggested to be interacting with it.[4]
Radio imaging made with theVery Large Array (VLA) have shown the source has a complex morphology. The source has bothradio lobes and a compact radio core, however there are no signs of aradio jet.[10] An image made by theChandra X-ray Observatory showed there is alsoradio emission extended and surrounding the base of its northern radio lobe. A bright region is found in the northern radio lobe in addition.[11] There are more detections of radio emission in the galaxy's other regions and hot spot features.[12]
^Morganti, R.; Oosterloo, T.; Tadhunter, C. N.; Aiudi, R.; Jones, P.; Villar-Martin, M. (December 1999). "The radio structures of southern 2-Jy radio sources: New ATCA and VLA radio images".Astronomy and Astrophysics Supplement Series.140 (3):355–372.arXiv:astro-ph/9910150.Bibcode:1999A&AS..140..355M.doi:10.1051/aas:1999427.ISSN0365-0138.
