NGC 1961 explained

NGC 1961
Epoch:J2000
Type:SAB(rs)c [1]
Dist Ly:173 Mly (53.4 Mpc)
Z:3934 ± 1 km/s
Appmag V:10.9
Size V:4.6 × 3.0
Constellation Name:Camelopardalis
Names:IC 2133, Arp 184, UGC 3334, PGC 17625, 6C B053634.9+692058, 8C 0536+693

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. A luminous X-ray corona has been detected around the galaxy.[2] [3] NGC 1961 is the central member of the small group of nine galaxies, the NGC 1961 group.[4]

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]

Notes and References

  1. Web site: NASA/IPAC Extragalactic Database . Results for NGC 1961 . 2016-01-18 .
  2. Michael E. Anderson and Joel N. Bregman. Detection of a Hot Gaseous Halo around the Giant Spiral Galaxy NGC 1961. The Astrophysical Journal. August 2011. 737. 1. 10. 10.1088/0004-637X/737/1/22. 1105.4614 . 2011ApJ...737...22A . 59270186.
  3. Bogdán. Ákos. Forman. William R.. Vogelsberger. Mark. Bourdin. Hervé. Sijacki. Debora. Debora Šijački . Mazzotta. Pasquale. Kraft. Ralph P.. Jones. Christine. Gilfanov. Marat. Churazov. Eugene. David. Laurence P.. Hot X-Ray Coronae around Massive Spiral Galaxies: A Unique Probe of Structure Formation Models. The Astrophysical Journal. 1 August 2013. 772. 2. 97. 10.1088/0004-637X/772/2/97. 1212.0541 . 2013ApJ...772...97B . 5987732.
  4. Epinat. B.. Amram. P.. Marcelin. M.. Balkowski. C.. Daigle. O.. Hernandez. O.. Chemin. L.. Carignan. C.. Gach. J.-L.. Balard. P.. 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. 1 August 2008. 388. 2. 500–550. 10.1111/j.1365-2966.2008.13422.x. free . 0805.0976 . 2008MNRAS.388..500E . 14282151.
  5. https://www.wis-tns.org/object/1998eb Transient Name Server entry for SN 1998eb.
  6. https://www.wis-tns.org/object/2001is Transient Name Server entry for SN 2001is.
  7. https://www.wis-tns.org/object/2013cc Transient Name Server entry for SN 2013cc.
  8. http://www.cbat.eps.harvard.edu/lists/Supernovae.html List of Supernovae
  9. Web site: Itagaki . Koichi . Transient Name Server SN 2021vaz Discovery Certificate . Transient Name Server . TNS . 7 August 2021 . 6.

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