| IC 2006 | |
|---|---|
 IC 2006, imaged by the Hubble Space Telescope | |
| Observation data (J2000 epoch) | |
| Constellation | Eridanus |
| Right ascension | 03 54 28.427 |
| Declination | −35° 58′ 01.75″ |
| Redshift | 0.004610 |
| Heliocentric radial velocity | 1382 |
| Distance | 65.36 ± 0.46 Mly (20.04 ± 0.14 Mpc) |
| Group or cluster | Fornax Cluster |
| Apparent magnitude (B) | 12.39 |
| Characteristics | |
| Type | E1 |
| Size | 35 000 light-years in diameter |
| Apparent size (V) | 2.1′ × 1.8′ |
| Notable features | Early-type galaxy |
| Other designations | |
| AM 0532-360, MGC-06-09-037, PGC 14077 | |
IC 2006 is an elliptical galaxy in the constellation Eridanus. The galaxy was discovered on 3 October 1897 by the American astronomer Lewis A. Swift. It is estimated to be around 60 to 70 million light years (20 megaparsecs) away, in the Fornax Cluster. The galaxy is one of the smaller in the Fornax cluster, with a diameter of only 35 000 light-years.
IC 2006 is an early-type galaxy with a Hubble classification of E1, but has also been listed as a lenticular galaxy with a morphological type of SA0. Despite their name, early-type galaxies are much older than spiral galaxies, and mostly comprise old, red-colored stars. Very little star formation occurs in these galaxies; the lack of star formation in elliptical galaxies appears to start at the center and then slowly propagates outward. Its age is estimated to be 8.1 ± 1.7 billion years.
An image taken by the Hubble Space Telescope in 2015 shows a characteristically smooth profile, with no spiral arms. However, IC 2006 has a ring surrounding it. The ring appears to rotate in a direction opposite to the rest of the body, but this may be explained by a polar ring with an elliptical shape.
References
- ^ Skrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W.; Chester, Thomas; Elias, Jonathan H.; Huchra, John P.; Liebert, James W.; Lonsdale, Carol J.; Monet, David G.; Price, Stephan; Seitzer, Patrick; Jarrett, Thomas H.; Kirkpatrick, J. Davy; Gizis, John E.; Howard, Elizabeth V.; Evans, Tracey E.; Fowler, John W.; Fullmer, Linda; Hurt, Robert L.; Light, Robert M.; Kopan, Eugene L.; Marsh, Kenneth A.; McCallon, Howard L.; Tam, Robert; Van Dyk, Schuyler D.; Wheelock, Sherry L. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi:10.1086/498708. ISSN 0004-6256. S2CID 18913331.
- ^ "NED results for object IC 2006". National Aeronautics and Space Administration / Infrared Processing and Analysis Center. Retrieved 5 March 2017.
- ^ Tully, R. Brent; et al. (2013). "Cosmicflows-2: The Data". The Astronomical Journal. 146 (4): 86. arXiv:1307.7213. Bibcode:2013AJ....146...86T. doi:10.1088/0004-6256/146/4/86. S2CID 118494842. Distances accessed using SIMBAD.
- "IC 2006". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 5 March 2017.
- ^ Trinchieri, G.; Rampazzo, R.; Mazzei, P.; Marino, A.; Wolter, A. (2015). "Investigating early-type galaxy evolution with a multiwavelength approach - I. X-ray properties of 12 galaxies observed with Swift and XMM-Newton". Monthly Notices of the Royal Astronomical Society. 449 (3): 3021–3042. Bibcode:2015MNRAS.449.3021T. doi:10.1093/mnras/stv466.
- Seligman, Courtney. "Index Catalog objects: IC 2000 - 2049". cseligman.com. Retrieved 5 March 2017.
- Howell, Elizabeth (2015). "Colossal Ancient Galaxies Die from the Inside Out". space.com. Retrieved 5 March 2017.
- Panuzzo, P.; Rampazzo, R.; Bressan, A.; Vega, O.; Annibali, F.; Buson, L. M.; Clemens, M. S.; Zeilinger, W. W. (2011). "Nearby early-type galaxies with ionized gas. VI. The Spitzer-IRS view. Basic data set analysis and empirical spectral classification". Astronomy & Astrophysics. 528: A10. arXiv:1010.2323. Bibcode:2011A&A...528A..10P. doi:10.1051/0004-6361/201015908. S2CID 117915425.
- "Elliptical galaxy IC 2006 | ESA/Hubble". www.spacetelescope.org. 2015. Archived from the original on 21 April 2015. Retrieved 5 March 2017.
- Bertsik, P. P.; Kolesnik, I. G. (1992). "IC 2006 - an elliptical galaxy with a polar ring". Kinematika I Fizika Nebesnykh Tel. 8 (4): 92–96. Bibcode:1992KFNT....8...92B.
External links
Media related to IC 2006 at Wikimedia Commons
