NGC 2146

NGC 2146 is a barred spiral galaxy type SB(s)ab pec in the constellation Camelopardalis. The galaxy was discovered in 1876 by Friedrich August Theodor Winnecke.[2]

NGC 2146
HST image of NGC 2146.
Credit: ESA/Hubble & NASA.
Observation data (J2000 epoch)
ConstellationCamelopardalis
Right ascension06h 18m 37.7s[1]
Declination+78° 21′ 25″[1]
Redshift893 ± 5 km/s[1]
Distance70,000,000 lyr
Apparent magnitude (V)11.38[1]
Characteristics
TypeSB(s)ab pec[1]
Apparent size (V)6′.0 × 3′.4[1]
Other designations
UGC 3429,[1] CGCG 348-017, MCG +13-05-0, 4C +78.06, PGC 18797[1]

It has a diameter of 80,000 lyr.[2] The galaxy's most conspicuous feature is the dusty lanes of a spiral arm lying across the core of the galaxy as seen from Earth, the arm having been bent 45 degrees by a close encounter with a smaller galaxy possibly NGC 2146a about 0.8 billion years ago.[2] This close encounter is credited with the relatively high rates of star formation that qualify NGC 2146 as a starburst galaxy.[2]

It has been host to two known supernova events:

  • SN 2005V, a type Ib/c supernova discovered by LIRIS on 30 January 2005.[3][4]
  • SN 2018zd, a type II supernova (possibly type IIn[5]), was discovered on 2 March 2018 by Koichi Itagaki.[6]

References
  1. NED (July 16, 2012), Results for search on NGC 2146
  2. "Feeling the strain". The Hubble European Space Agency Information Centre. 22 August 2011. Retrieved 6 October 2012.
  3. Mattlla, S; Greimel, R; Meikle, P (2005). "LIRIS Discovers Supernovae in Starburst Galaxies" (PDF). The Newsletter of the Isaac Newton Group of Telescopes. 9: 16. Bibcode:2005INGN....9...16M. Retrieved 8 July 2015.
  4. "Image of supernova 2005V". rochesterastronomy.org. 4 February 2005. Retrieved 10 March 2018.
  5. Zhang, Jujia; Xu, Liang; Wang, Xiaofeng (6 March 2018). "ATEL #11379: Spectroscopic Classification of SN 2018zd as a very young Type IIn Supernova". Retrieved 10 March 2018.
  6. "SN 2018zd". Transient Name Server. 2 March 2018. Retrieved 10 March 2018.
  7. "Supernova 2018zd in NGC 2146". rochesterastronomy.org. 2 March 2018. Retrieved 10 March 2018.
  • Media related to NGC 2146 at Wikimedia Commons


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