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NGC 1559 information


NGC 1559
Observation data (J2000.0 epoch)
ConstellationReticulum
Right ascension4h 17m 35.8s[1]
Declination−62° 47′ 1″[1]
Redshift1304 ± 4 km/s[1]
Apparent magnitude (V)11[1]
Characteristics
TypeSB(s)cd[1]
Apparent size (V)3.5 × 2.0[1]
Other designations
PGC 14814[1]
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NGC 1559 is a barred spiral galaxy in the constellation Reticulum. It is also a Seyfert galaxy. Although it was originally thought to be a member of the Dorado Group,[2] subsequent observations have shown that it is in fact not a member of any galaxy group or cluster and does not have any nearby companions.[3][4] NGC 1559 has massive spiral arms and strong star formation.[3] It contains a small bar which is oriented nearly east-west and spans 40″.[3] Its bar and disc are the source of very strong radio emissions.[3]

Four supernovae have been observed in NGC 1559. Australian amateur astronomer Robert Evans[5] discovered the first three: SN 1984J (type II, mag. 13.5),[6] SN 1986L (type II, mag. 13.5),[7] and SN 2005df (Type Ia, mag 12.3).[8] SN 2009ib (type IIP, mag. 14.7)[9] was discovered on 6 August 2009.

Supernova SN 2005df is visible as the bright star just above the galaxy (imaged by ESO's 8.2m VLT)
  1. ^ a b c d e f g "NASA/IPAC Extragalactic Database", Results for NGC 4650A, retrieved 2007-04-03
  2. ^ Huchra, J. P.; Geller, M. J. (June 15, 1982), "Groups of galaxies. I - Nearby groups", Astrophysical Journal, 257 (Part 1): 423–437, Bibcode:1982ApJ...257..423H, doi:10.1086/160000
  3. ^ a b c d Beck, R.; Shoutenkov, V.; Ehle, M.; Harnett, J. I.; et al. (August 2002), "Magnetic fields in barred galaxies. I. The atlas", Astronomy and Astrophysics, 391 (1): 83–102, arXiv:astro-ph/0207201, Bibcode:2002A&A...391...83B, doi:10.1051/0004-6361:20020642, S2CID 14749261
  4. ^ Maia, M. A. G.; da Costa, L. N.; Latham, David W. (April 1989), "A catalog of southern groups of galaxies", Astrophysical Journal Supplement Series, 69: 809–829, Bibcode:1989ApJS...69..809M, doi:10.1086/191328, ISSN 0067-0049
  5. ^ "Supernova Discoveries by Rev. Robert Evans". revivals.arkangles.com/. Archived from the original on 3 March 2016. Retrieved 11 July 2015.
  6. ^ Transient Name Server entry for SN 1984J. Retrieved 25 March 2023.
  7. ^ Transient Name Server entry for SN 1986L. Retrieved 25 March 2023.
  8. ^ Transient Name Server entry for SN 2005df. Retrieved 25 March 2023.
  9. ^ Transient Name Server entry for SN 2009ib. Retrieved 25 March 2023.

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