3C 236

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3C 236 North
3C236 Hubble.jpg
3C 236 by HST, 10.8″ view
Observation data (J2000 epoch)
Constellation Leo Minor
Right ascension 10h 06m 01.7s[1]
Declination +34° 54′ 10″[1]
Redshift 0.1005 (NED)[1]
Distance 1.3 billion light-years
(Light travel time)[1]
Apparent dimensions (V) 0′.46 × 0′.38[1]
Apparent magnitude (V) 16.4g[1]
Other designations
PGC 29329,[1] LEDA 29329 , 7C 1003+3508 , 4C 35.22
See also: Galaxy, List of galaxies

3C 236 is a Fanaroff and Riley Class II (FR II) radio galaxy. It is among the largest known radio galaxies, with the radio structure having a total linear size in excess of 4.5 Mpc (15 million light years); this makes it the second largest object known in the universe. The galaxy features a "double-double" radio morphology consisting of the giant relic 4.5 Mpc source and an inner 2 kpc compact steep spectrum radio source. A recent starburst episode near the nucleus may be related to the event resulting in re-ignition of radio activity .[2]


External link bibliography[edit]


  1. ^ a b c d e f g h "NASA/IPAC Extragalactic Database". Results for 3C 236. Retrieved 2008-07-19. 
  2. ^ Tremblay, Grant R.; O'Dea, Christopher P.; Baum, Stefi A.; Koekemoer, Anton M.; Sparks, William B.; de Bruyn, Ger; Schoenmakers, Arno P. (April 2010), "Episodic Star Formation Coupled to Reignition of Radio Activity in 3C 236", The Astrophysical Journal 715: 172, arXiv:1004.0388, Bibcode:2010ApJ...715..172T, doi:10.1088/0004-637X/715/1/172 

Print sources[edit]

  • Nature 250, 625 - 630 (23 August 1974)
  • Nature 257, 99 - 103 (11 September 1975)

Coordinates: Sky map 10h 06m 01.7s, +34° 54′ 10″