NGC 1961

NGC 1961
NGC 1961 imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
ConstellationCamelopardalis
Right ascension05h 42m 04.6s[1]
Declination+69° 22′ 42″[1]
Redshift3934 ± 1 km/s[1]
Distance173 Mly (53.4 Mpc)[1]
Apparent magnitude (V)10.9
Characteristics
TypeSAB(rs)c [1]
Apparent size (V)4.6′ × 3.0′[1]
Other designations
IC 2133, Arp 184, UGC 3334, PGC 17625, 6C B053634.9+692058, 8C 0536+693[1]

NGC 1961 (also known as IC 2133) is a spiral galaxy in the constellation Camelopardalis. It was discovered by William Herschel on 3 December 1788. It is at a distance of about 200 million light years from Earth, which, given its apparent dimensions, means that NGC 1961 is more than 220,000 light years across.

The galaxy has been distorted, however no companion has been detected nor double nuclei that could show a recent merger. Its outer arms are highly irregular. Two long straight arms extend from the north side of the galaxy.[2] A luminous X-ray corona has been detected around the galaxy.[3][4] NGC 1961 is the central member of the small group of nine galaxies, the NGC 1961 group.[2]

Four supernovae have been observed in NGC 1961: SN 1998eb (type Ia, mag. 17.8),[5] SN 2001is (type Ib, mag. 17.6),[6] SN 2013cc (type II, mag. 17),[7][8] and SN 2021vaz (type II, mag. 17.5).[9]

References

  1. ^ a b c d e f g "NASA/IPAC Extragalactic Database". Results for NGC 1961. Retrieved 2016-01-18.
  2. ^ a b Epinat, B.; Amram, P.; Marcelin, M.; Balkowski, C.; Daigle, O.; Hernandez, O.; Chemin, L.; Carignan, C.; Gach, J.-L.; Balard, P. (1 August 2008). "GHASP: an Hα kinematic survey of spiral and irregular galaxies – VI. New Hα data cubes for 108 galaxies". Monthly Notices of the Royal Astronomical Society. 388 (2): 500–550. arXiv:0805.0976. Bibcode:2008MNRAS.388..500E. doi:10.1111/j.1365-2966.2008.13422.x. S2CID 14282151.
  3. ^ Michael E. Anderson and Joel N. Bregman (August 2011). "Detection of a Hot Gaseous Halo around the Giant Spiral Galaxy NGC 1961". The Astrophysical Journal. 737 (1): 10. arXiv:1105.4614. Bibcode:2011ApJ...737...22A. doi:10.1088/0004-637X/737/1/22. S2CID 59270186.
  4. ^ Bogdán, Ákos; Forman, William R.; Vogelsberger, Mark; Bourdin, Hervé; Sijacki, Debora; Mazzotta, Pasquale; Kraft, Ralph P.; Jones, Christine; Gilfanov, Marat; Churazov, Eugene; David, Laurence P. (1 August 2013). "Hot X-Ray Coronae around Massive Spiral Galaxies: A Unique Probe of Structure Formation Models". The Astrophysical Journal. 772 (2): 97. arXiv:1212.0541. Bibcode:2013ApJ...772...97B. doi:10.1088/0004-637X/772/2/97. S2CID 5987732.
  5. ^ Transient Name Server entry for SN 1998eb. Retrieved 25 March 2023.
  6. ^ Transient Name Server entry for SN 2001is. Retrieved 25 March 2023.
  7. ^ Transient Name Server entry for SN 2013cc. Retrieved 25 March 2023.
  8. ^ List of Supernovae IAU Central Bureau for Astronomical Telegrams. Retrieved 29 December 2015.
  9. ^ Itagaki, Koichi. "Transient Name Server SN 2021vaz Discovery Certificate". Transient Name Server. TNS. Retrieved 7 August 2021.
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