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IC 184

IC 184
SDSS image of IC 184
Observation data (J2000 epoch)
ConstellationCetus
Right ascension01h 59m 51.25s[1]
Declination−06° 50′ 24.36″[1]
Redshift0.017952[1]
Heliocentric radial velocity5,382 km/s ± 26[1]
Distance243 Mly
Apparent magnitude (V)13.8[2]
Characteristics
TypeSB(r)a:;Sy2 HII[1]
Size~93,000 ly (28.4 kpc) (estimated)[1]
Other designations
6dF J0159512-065025, 2MASX J01595121-0650253, NSA 130927, PGC 7554, IRAS F01573-0704, MCG -01-06-021[1]

IC 184 is a spiral galaxy located in the constellation of Cetus. The redshift of the galaxy is (z) 0.0179[1] and it was first discovered by the American astronomer Ormond Stone in October 1887 who gave the description of the object as both faint and small.[3] It has also been classified as a Type 2 Seyfert galaxy.[4][5][6]

Description

IC 184 is classified as an early-type spiral galaxy of type SB(r)a based on Calar Alto CCD imaging and is a member of small galaxy group comprising three other galaxies, MCG -01-06-09, MCG -01-06-020 and MCG -01-06-022.[7][4] When observed, it is shown to have an outer bar feature that is clearly resolved into multiple spiral arms, depicted as having a bright appearance.[8] The central region of the galaxy is found to have isophotal twisting and also the rotation of its position angle (PA). There is a presence of an inner bar that has a region shown as visible as a thick curved elongated feature that begins at the end. The northern spiral arm of the galaxy is found to be much more brighter compared to the southern spiral arm.[9] There are also traces of both inner and outer shell features based on imaging made with Hubble Space Telescope (HST).[10]

Evidence has found IC 184 is an isolated galaxy. When observed, it has a galaxy rotation curve that is orientated along the major axis position angle of 7° and 97°, with the rotation of both the gas and stars being described as decoupled with 4 arcseconds of its own galactic center. A further observation also found the presence of a structure within the innermost region of nine arcseconds, depicted as having a wavy central shape appearance.[11] A water megamaser source has been detected in the galaxy.[12] The luminosity of the megamaser emission is estimated to be 1.0 L☉.[13]

References

  1. ^ a b c d e f g h "NED Search results for IC 184". NASA/IPAC Extragalactic Database. Retrieved 2026-01-31.
  2. ^ "Revised IC Data for IC 184". spider.seds.org. Retrieved 30 March 2024.
  3. ^ "Index Catalog Objects: IC 150 - 199". cseligman.com. Retrieved 2026-01-31.
  4. ^ a b Kollatschny, W.; Fricke, K. J. (September 1987). "The Seyfert 2 galaxy IC 184 and its surrounding group". Astronomy and Astrophysics. 183: 9–12. Bibcode:1987A&A...183....9K.
  5. ^ Zhang, J. S.; Henkel, C.; Guo, Q.; Wang, H. G.; Fan, J. H. (2009-12-11). "ON THE NUCLEAR OBSCURATION OF H2O MASER GALAXIES". The Astrophysical Journal. 708 (2): 1528–1536. arXiv:0912.2159. doi:10.1088/0004-637X/708/2/1528.
  6. ^ Zhang, J. S.; Henkel, C.; Guo, Q.; Wang, J. (2012-02-01). "Radio properties of H2O maser host galaxies". Astronomy & Astrophysics. 538: A152. arXiv:1201.2075. doi:10.1051/0004-6361/201117946. ISSN 0004-6361.
  7. ^ Wozniak, Hervé; Champavert, Nicolas (2006-05-08). "Lifetime of nuclear velocity dispersion drops in barred galaxies". Monthly Notices of the Royal Astronomical Society. 369 (2): 853–859. arXiv:astro-ph/0603784. Bibcode:2006MNRAS.369..853W. doi:10.1111/j.1365-2966.2006.10359.x. ISSN 0035-8711.
  8. ^ Erwin, Peter (2004-02-13). "Double-barred galaxies. I. A catalog of barred galaxies with stellar secondary bars and inner disks". Astronomy & Astrophysics. 415 (3): 941–957. arXiv:astro-ph/0310806. Bibcode:2004A&A...415..941E. doi:10.1051/0004-6361:20034408. ISSN 0004-6361.
  9. ^ Marquez, I.; Durret, F.; Delgado, R. M. Gonzalez; Marrero, I.; Masegosa, J.; Maza, J.; Moles, M.; Perez, E.; Roth, M. (1999-09-21). "Near-infrared photometry of isolated spirals with and without an AGN". Astronomy and Astrophysics Supplement Series. 140: 1–14. arXiv:astro-ph/9909351. doi:10.1051/aas:1999516.
  10. ^ Malkan, M. A.; Gorjian, V.; Tam, R. (1998-03-11). "A Hubble Space Telescope Imaging Survey of Nearby Active Galactic Nuclei". The Astrophysical Journal Supplement Series. 117 (1): 25–88. arXiv:astro-ph/9803123. Bibcode:1998ApJS..117...25M. doi:10.1086/313110.
  11. ^ Márquez, I.; Masegosa, J.; Durret, F.; Delgado, R. M. González; Moles, M.; Maza, J.; Pérez, E.; Roth, M. (2003-10-01). "The detection of stellar velocity dispersion drops in the central regions of five isolated Seyfert spirals" (PDF). Astronomy & Astrophysics. 409 (2): 459–467. arXiv:astro-ph/0306497. Bibcode:2003A&A...409..459M. doi:10.1051/0004-6361:20031059. ISSN 0004-6361.
  12. ^ Kondratko, P. T.; Greenhill, L. J.; Moran, J. M.; Lovell, J. E. J.; Kuiper, T. B. H.; Jauncey, D. L.; Cameron, L. B.; Gomez, J. F.; Garcia-Miro, C.; Moll, E.; de Gregorio-Monsalvo, I.; Jimenez-Bailon, E. (2006-02-10). "Discovery of Water Maser Emission in Eight AGNs with 70 m Antennas of NASA's Deep Space Network". The Astrophysical Journal. 638 (1): 100–105. arXiv:astro-ph/0510851. Bibcode:2006ApJ...638..100K. doi:10.1086/498641. ISSN 0004-637X.
  13. ^ Liu, Z. W.; Zhang, J. S.; Henkel, C.; Liu, J.; Müller, P.; Guo, J. Z. Wang Q.; Wang, J.; Li, J. (2016-12-16). "A systematic observational study of radio properties of H2O megamaser Seyfert-2 galaxies". Monthly Notices of the Royal Astronomical Society. 466 (2): 1608–1624. arXiv:1612.05315. doi:10.1093/mnras/stw3158.

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