Wikipedia

PKS 0053−015

PKS 0053−015
SDSS image of PKS 0053−015
Observation data (J2000 epoch)
ConstellationCetus
Right ascension00h 56m 25.59s[1]
Declination−01° 15′ 44.94″[1]
Redshift0.038230[1]
Heliocentric radial velocity11,461 km/s ± 3[1]
Distance515 Mly (158.00 Mpc)[1]
Group or clusterAbell 119
Apparent magnitude (V)13.68
Characteristics
TypeE/S0[1]
Size~200,000 ly (62 kpc) (estimated)[1]
Other designations
UGC 583, CGCG 384-038, GIN 013, PGC 3365, NSA 062154, PKS B0053-015, TXS 0053-015, OCARS 0053-015[1]

PKS 0053−015 is a radio galaxy located in the constellation of Cetus. The redshift of the galaxy is (z) 0.038[1] and it was first discovered by astronomers conducting the Parkes Catalogue survey at the Parkes Observatory in December 1966.[2] This galaxy is one of the two narrow-angle tail (NAT) radio galaxies alongside PKS 0053−016 to be members of the Abell 119 galaxy cluster.[3][4] In the Uppsala General Catalogue, it is designated as UGC 583.[5][6]

Description

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PKS 0053−015 is classified to be an elliptical galaxy.[5] It is known to contain a narrow-angle tail source. When observed, it has two jets of different surface brightness that is found to roughly bend towards the direction of south.[7] Further imaging at 1.4 GHz frequencies, also found the jets are found to have a short appearance with an orientation of northeast to southwest direction. Evidence also showed the northeast jet is shown as bending by around 90 degrees in the south to form a low surface brightness lobe, subsequently merging with the radio emission.[8]

Radio imaging made at higher resolution at 4.9 GHz frequencies, found the southwest jet is described as well-collimated for around 20 arcseconds before widening up to form a lobe feature characterized by several wiggles and bends. The northeast jet is described as straight from the start, but becomes sharply bending by 90 degrees then forms a large lobe feature. Unlike the southwest jet, this jet is slightly more brighter and is found surrounded by a cocoon of low brightness.[8] Evidence also found the surface brightness of this jet is found to decrease faster compared to the southwest jet.[9] The radio core of the source is unresolved but it has a bright appearance. There is also evidence of fractional polarization of around four percent in the central nucleus, which it turn oscillates to around the range of between 10 and 35 percent along the two lobes.[8] Studies published in 2017, has discovered there is a filament feature with a narrow flat radio spectrum, shown as coinciding together with the southwest jet.[9]

The central supermassive black hole of the galaxy is estimated to be 8.98 solar masses based on a study published in December 2002. The total apparent R-band magnitude of the galaxy is estimated as -24.03.[10]

References

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  1. ^ a b c d e f g h i "NED Search results for PKS 0053-015". NASA/IPAC Extragalactic Database. Retrieved 2026-01-25.
  2. ^ Shimmins, A. J.; Day, G. A.; Ekers, R. D.; Cole, D. J. (December 1966). "The Parkes catalogue of radio sources, declination zone 0° to -20°". Australian Journal of Physics. 19 (6): 837–874. Bibcode:1966AuJPh..19..837S. doi:10.1071/PH660837. ISSN 0004-9506.
  3. ^ Watson, Courtney B.; Blanton, Elizabeth L.; Randall, Scott W.; Sarazin, Craig L.; Sarkar, Arnab; ZuHone, John A.; Douglass, E. M. (2023-09-22). "CHANDRA X-Ray Observations of A119: Cold Fronts and a Shock in an Evolved Off-axis Merger". The Astrophysical Journal. 955 (2): 103. arXiv:2308.04367. Bibcode:2023ApJ...955..103W. doi:10.3847/1538-4357/acee74. ISSN 0004-637X.
  4. ^ O'Dea, C. P.; Owen, F. N. (June 1985). "The global properties of a representative sample of 51 narrow-angle-tail radio sources in the directions of Abell clusters". The Astronomical Journal. 90: 954–972. Bibcode:1985AJ.....90..954O. doi:10.1086/113802. ISSN 0004-6256.
  5. ^ a b Condon, J. J.; Broderick, J. J. (July 1988). "Radio identifications of UGC galaxies - Starbursts and monsters". The Astronomical Journal. 96: 30. Bibcode:1988AJ.....96...30C. doi:10.1086/114788. ISSN 0004-6256.
  6. ^ Nilson, P. (1973). "Uppsala General Catalogue of Galaxies, 1973, Acta Universitatis Upsalienis, Nova Regiae Societatis Upsaliensis, Series v: a Vol". Nova Acta Regiae Soc. Sci. Upsaliensis Ser. V: 0. Bibcode:1973UGC...C...0000N.
  7. ^ Mack, K.-H.; Feretti, L.; Giovannini, G.; Klein, U. (December 1993). "Observations of 10 tailed radio sources at 10.6 GHz". Astronomy and Astrophysics. 280: 63–75. Bibcode:1993A&A...280...63M. ISSN 0004-6361.
  8. ^ a b c Feretti, L.; Dallacasa, D.; Govoni, F.; Giovannini, G.; Taylor, G. B.; Klein, U. (April 1999). "The radio galaxies and the magnetic field in Abell 119". Astronomy and Astrophysics. 344: 472–482. arXiv:astro-ph/9902019. Bibcode:1999A&A...344..472F. ISSN 0004-6361.
  9. ^ a b Sebastian, Biny; Lal, Dharam V.; Rao, A. Pramesh (2017-09-29). "Giant Metrewave Radio Telescope Observations of Head–Tail Radio Galaxies". The Astronomical Journal. 154 (4): 169. arXiv:1709.07421. Bibcode:2017AJ....154..169S. doi:10.3847/1538-3881/aa88d0. ISSN 0004-6256.
  10. ^ Bettoni, D.; Falomo, R.; Fasano, G.; Govoni, F. (2003-03-01). "The black hole mass of low redshift radiogalaxies". Astronomy & Astrophysics. 399 (3): 869–878. arXiv:astro-ph/0212162. Bibcode:2003A&A...399..869B. doi:10.1051/0004-6361:20021869. ISSN 0004-6361.
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