IC 2006

Source: Wikipedia, the free encyclopedia.
IC 2006
J2000 epoch)
ConstellationEridanus
Right ascension03h 54m 28.427s[1]
Declination−35° 58′ 01.75″[1]
Redshift0.004610[2]
Heliocentric radial velocity1382[2]
Distance65.36 ± 0.46 Mly (20.04 ± 0.14 Mpc)[3]
Group or clusterFornax Cluster[3]
Apparent magnitude (B)12.39[4]
Characteristics
TypeE1[5]
Size35 000 light-years in diameter
Apparent size (V)2.1′ × 1.8′[2]
Notable featuresEarly-type galaxy
Other designations
AM 0532-360, MGC-06-09-037, PGC 14077

IC 2006 is an

megaparsecs) away,[2] in the Fornax Cluster.[3]
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,[5] but has also been listed as a lenticular galaxy with a morphological type of SA0−.[2] 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.[7] Its age is estimated to be 8.1 ± 1.7 billion years.[8]

An image taken by the Hubble Space Telescope in 2015 shows a characteristically smooth profile, with no spiral arms.[9] 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.[10]

References

  1. ^
    S2CID 18913331
    .
  2. ^
    National Aeronautics and Space Administration / Infrared Processing and Analysis Center
    . Retrieved 5 March 2017.
  3. ^
    S2CID 118494842
    . Distances accessed using SIMBAD.
  4. ^ "IC 2006". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 5 March 2017.
  5. ^
    doi:10.1093/mnras/stv466
    .
  6. ^ Seligman, Courtney. "Index Catalog objects: IC 2000 - 2049". cseligman.com. Retrieved 5 March 2017.
  7. ^ Howell, Elizabeth (2015). "Colossal Ancient Galaxies Die from the Inside Out". space.com. Retrieved 5 March 2017.
  8. S2CID 117915425
    .
  9. ^ "Elliptical galaxy IC 2006 | ESA/Hubble". www.spacetelescope.org. 2015. Archived from the original on 21 April 2015. Retrieved 5 March 2017.
  10. Bibcode:1992KFNT....8...92B
    .
  • Media related to IC 2006 at Wikimedia Commons


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