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NGC 2146

From Wikipedia, the free encyclopedia

NGC 2146
HST image of NGC 2146.
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]

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]

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:

Gallery

References

  1. ^ a b c d e f g h NED (July 16, 2012), Results for search on NGC 2146
  2. ^ a b c d "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. ^ Hiramatsu D, Howell D, Van S, et al. (28 June 2021). "The electron-capture origin of supernova 2018zd". Nat Astron. 5 (9): 903–910. arXiv:2011.02176. Bibcode:2021NatAs...5..903H. doi:10.1038/s41550-021-01384-2. S2CID 226246044.
  7. ^ "New, Third Type Of Supernova Observed". W. M. Keck Observatory. 28 June 2021.
  8. ^ "Astronomers discover new type of supernova". RTE News. PA. 28 June 2021. Retrieved 1 July 2021. In 1980, Ken'ichi Nomoto of the University of Tokyo predicted a third type called an electron capture supernova. ... In an electron capture supernova, as the core runs out of fuel, gravity forces electrons in the core into their atomic nuclei, causing the star to collapse in on itself.
  9. ^ "SN 2018zd". Transient Name Server. 2 March 2018. Retrieved 10 March 2018.
  10. ^ "Supernova 2018zd in NGC 2146". rochesterastronomy.org. 2 March 2018. Retrieved 10 March 2018.

External links


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This page was last edited on 11 September 2023, at 22:08
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