IC 2082

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IC 2082
IC 2082 DESI Legacy Surveys.png
DESI Legacy Surveys image of IC 2082
Observation data (J2000 epoch)
Constellation Dorado
Right ascension 04h 29m 08.240s [1]
Declination −53° 49′ 40.200″ [1]
Redshift 0.039311 [1]
Heliocentric radial velocity 11,785 km/s [1]
Distance 567 Mly (174 Mpc)
Apparent magnitude  (V)13.2 [2]
Characteristics
Type S0 pec WLRG [1]
Size~247,600  ly (75.91  kpc) (estimated) [1]
Other designations
IC 2082, ESO 157-IG035, PKS 0427-53, PMN J0429-5349, RR 089, PGC 15239, PAPER J067.27-53.76 [1]

IC 2082 is a large peculiar lenticular galaxy located towards the constellation of Dorado. The galaxy lies about 560 million-light years away from Earth [1] and it was first discovered by DeLisle Stewart on December 7 1899, who described it as either a galaxy pair or a binuclear galaxy. [3]

Contents

Description

IC 2082 makes up a part of a dumbbell system. [4] [5] [6] It is described as having two nuclei with a separation gap of 33 kiloparsecs and is enveloped by an extended halo. [4] There are tidal distortions to both the galaxy and its companion in the system described as having an irregular appearance, suggesting a strong interaction with each other by the forces. [7] [8] The spectrum of the galaxy is found to display weak emission lines. [9]

The nucleus of the galaxy has been classified as active and it has been referred to as a Fanaroff-Riley class Type-I radio galaxy with a powerful source associated with the fainter south-eastern component of the system. [10] [8] [11] Based on radio imaging, the source is categorized as having a wide-angle tail radio morphology. The western tail is long, travelling up to more than 8 arcmin from the nucleus while the eastern tail is however shorter in terms of projection, displaying a swing degree north by 1.6 arcmin before sharply bending east. The head of the source is separated into two resolved components. [11]

A long trail of radio emission is seen extending westwards from the galaxy's western radio lobe with further imaging showing both the inner lobes and its radio core. [12] Observations showed the component on the western side is heavily polarized by 14% at position angle of 165°. [13]

IC 2082 is the brightest member residing in the center of DC 0428-53, a Bautz-Morgan type I-II galaxy cluster. [6] [14] Known as Abell S463, the cluster is home to at least 200 galaxies of which 30 of them have measured velocity measurements and is made up of three subgroups. [15] [16] [14]

References

  1. 1 2 3 4 5 6 7 8 "Results for IC 2082". NASA/IPAC Extragalactic Database. Retrieved 2025-07-25.
  2. ↑ "Revised IC Data for IC 2082". spider.seds.org.
  3. ↑ Seligman, Courtney. "IC 2082 ( = PGC 15239)". Celestial Atlas. Retrieved 2025-07-25.
  4. 1 2 Sérsic, J. L. (1961). "IC 2082 and the Radio source in Doradus". Zeitschrift für Astrophysik. 53: 256. ISSN   0372-8331.
  5. ↑ Burgess, A. M.; Hunstead, R. W. (January 2006). "The Molonglo Southern 4 Jy Sample (MS4). II. ATCA Imaging and Optical Identification". The Astronomical Journal. 131 (1): 114–132. arXiv: astro-ph/0512590 . Bibcode:2006AJ....131..114B. doi:10.1086/498679. ISSN   0004-6256.
  6. 1 2 Carter, D.; Efstathiou, G.; Ellis, R. S.; Inglis, I.; Godwin, J. (April 1981). "The dynamics of the giant dumbell galaxy IC 2082". Monthly Notices of the Royal Astronomical Society. 195: 15P–20. Bibcode:1981MNRAS.195P..15C. doi: 10.1093/mnras/195.1.15P . ISSN   0035-8711.
  7. ↑ Inskip, K. J.; Tadhunter, C. N.; Morganti, R.; Holt, J.; Ramos Almeida, C.; Dicken, D. (September 2010). "A near-IR study of the host galaxies of 2 Jy radio sources at 0.03 <~ z <~ 0.5 - I. The data". Monthly Notices of the Royal Astronomical Society. 407 (3): 1739–1766. arXiv: 1005.2195 . Bibcode:2010MNRAS.407.1739I. doi: 10.1111/j.1365-2966.2010.17002.x . ISSN   0035-8711.
  8. 1 2 Govoni, F.; Falomo, R.; Fasano, G.; Scarpa, R. (May 2000). "Optical surface photometry of radio galaxies. II. Observations and data analysis". Astronomy and Astrophysics Supplement Series. 143 (3): 369–390. arXiv: astro-ph/0001449 . Bibcode:2000A&AS..143..369G. doi:10.1051/aas:2000338. ISSN   0365-0138.
  9. ↑ Sadler, Elaine M.; Ekers, Ronald D.; Mahony, Elizabeth K.; Mauch, Tom; Murphy, Tara (2014-02-11). "The local radio-galaxy population at 20 GHz". Monthly Notices of the Royal Astronomical Society. 438 (1): 796–824. arXiv: 1304.0268 . doi: 10.1093/mnras/stt2239 . ISSN   0035-8711.
  10. ↑ Massaro, F.; White, S. V.; García-Pérez, A. (March 2023). "The Astrophysical Journal Supplement Series". Powerful Radio Sources in the Southern Sky. I. Optical Identifications. arXiv: 2308.10071 . doi: 10.3847/1538-4365/acaf05 .
  11. 1 2 McAdam, W. B.; White, Graeme L.; Bunton, J. D. (1988-11-01). "Interaction of the radio source PKS 0427–53 with IC 2082 and the cluster medium". Monthly Notices of the Royal Astronomical Society. 235 (2): 425–431. doi: 10.1093/mnras/235.2.425 . ISSN   0035-8711.
  12. ↑ Morganti, R.; Killeen, N. E. B.; Tadhunter, C. N. (August 1993). "The radio structures of southern 2-Jy radio sources". Monthly Notices of the Royal Astronomical Society. 263 (4): 1023–1048. Bibcode:1993MNRAS.263.1023M. doi: 10.1093/mnras/263.4.1023 . ISSN   0035-8711.
  13. ↑ Gardner, F. F.; Whiteoak, J. B. (1971). "The polarization of extended radio sources at 6 cm wavelength. I. Extragalactic sources". Australian Journal of Physics. 24 (4): 899–911. Bibcode:1971AuJPh..24..899G. doi:10.1071/PH710899. ISSN   0004-9506.
  14. 1 2 Nikogossian, E. (2018-04-04). "Structure of the Clusters of Galaxies A 2634, A 1983, and DC 0428-53". Astrophysics. 44 (3): 305–314. doi:10.1023/A:1012811610324.
  15. ↑ Jones, Paul A.; McAdam, W. B. (May 1992). "The Structure of Southern Extragalactic Radio Sources". The Astrophysical Journal Supplement Series. 80: 137. Bibcode:1992ApJS...80..137J. doi:10.1086/191662. ISSN   0067-0049.
  16. ↑ Ellis, R. S.; Gray, P. M.; Carter, D.; Godwin, J. (January 1984). "Multi object spectroscopy using fibre optics at the Anglo-Australian telescope - an application to the IC 2082 galaxy cluster". Monthly Notices of the Royal Astronomical Society. 206 (2): 285–292. doi: 10.1093/mnras/206.2.285 . ISSN   0035-8711.
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