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IC 1101

Coordinates: Sky map 15h 10m 56.1s, +05° 44′ 41″
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IC 1101
Observation data (J2000 epoch)
ConstellationSerpens
Right ascension15h 10m 56.1s[1]
Declination+05° 44′ 41″[1]
Redshift23370 ± 30 km/s[1]
Distance1.07 Gly
Apparent magnitude (V)14.7[1]
Characteristics
TypeS0[1]
Number of stars100 trillion (1014)
Apparent size (V)1'.2 × 0'.6[1]
Other designations
UGC 9752,[1] PGC 54167[1]

IC 1101 is a supergiant lenticular galaxy at the center of the Abell 2029 galaxy cluster. It is 1.07 billion light years away in the constellation of Serpens and is classified as a cD class of galaxy.

Size

The galaxy has a diameter of approximately 6 million light years, which makes it currently (as of 2012) the largest known galaxy in terms of breadth.[2] It is the central galaxy of a massive cluster containing a mass (mostly dark matter) of roughly 100 trillion stars.[3][4] Being more than 50 times the size of the Milky Way and 2000 times as massive, if it were in place of our galaxy, it would swallow up the Large Magellanic Cloud, Small Magellanic Cloud, Andromeda Galaxy, and Triangulum Galaxy. IC 1101 owes its size to many collisions of much smaller galaxies about the size of the Milky Way and Andromeda galaxies.

File:Abell 2029.png
The Abell 2029 galaxy cluster in visible light (right) and IC 1101 in X-ray (left).

See also

References

  1. ^ a b c d e f g h "NASA/IPAC Extragalactic Database". Results for IC 1101. Retrieved 2006-11-11.
  2. ^ http://www.iop.org/EJ/article/0004-637X/616/1/178/60597.text.html
  3. ^ http://arxiv.org/PS_cache/astro-ph/pdf/0209/0209205v2.pdf
  4. ^ Uson, Juan M.; Boughn, Stephen P.; Kuhn, Jeffrey R. (1990). "The central galaxy in Abell 2029 - an old supergiant". Science. 250 (4980): 539–540. Bibcode:1990Sci...250..539U. doi:10.1126/science.250.4980.539. {{cite journal}}: Unknown parameter |month= ignored (help)CS1 maint: multiple names: authors list (link)