NGC 1961

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NGC 1961
Hubble NGC 1961.jpg
NGC 1961 imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
Constellation Camelopardalis
Right ascension 05h 42m 04.6477s [1]
Declination +69° 22′ 42.375″ [1]
Redshift 0.013122 [1]
Heliocentric radial velocity 3934 ± 1 km/s [1]
Distance 145.42 ± 27.36  Mly (44.586 ± 8.390  Mpc) [1]
Apparent magnitude  (V)10.9
Characteristics
Type SAB(rs)c [1]
Size~240,100  ly (73.62  kpc) (estimated) [1]
Apparent size  (V)4.6′ × 3.0′ [1]
Other designations
IRAS 05365+6921, IC 2133, Arp 184, UGC 3334, MCG +12-06-007, PGC 17625, CGCG 329-008 [1]

NGC 1961 is a spiral galaxy in the constellation Camelopardalis. It was discovered by German-British astronomer William Herschel on 3 December 1788. [2] It was also observed by Guillaume Bigourdan on 22 December 1891, causing it to be listed in the Index Catalogue as IC 2133. [2] Its velocity with respect to the cosmic microwave background for is 3,909±2 km/s, which corresponds to a Hubble distance of 188.0 ± 13.2  Mly (57.65 ± 4.04  Mpc ). [1] However, seven non redshift measurements give a much closer distance of 145.42 ± 27.36 Mly (44.586 ± 8.390 Mpc). [3]

Contents

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. [4] A luminous X-ray corona has been detected around the galaxy. [5] [6] NGC 1961 is the central member of the small group of nine galaxies, the NGC 1961 group. [4]

Supernovae

Four supernovae have been observed in NGC 1961:

References

  1. 1 2 3 4 5 6 7 8 9 10 "Results for object NGC 1961". NASA/IPAC Extragalactic Database. NASA and Caltech . Retrieved 2016-01-18.
  2. 1 2 Seligman, Courtney. "New General Catalogue Objects: NGC 1961". Celestial Atlas. Retrieved 24 April 2025.
  3. ↑ "Distance Results for NGC 1961". NASA/IPAC EXTRAGALACTIC DATABASE. NASA . Retrieved 24 April 2025.
  4. 1 2 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.
  5. ↑ 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.
  6. ↑ 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.
  7. ↑ Li, W. D.; Modjaz, M.; Halderson, E.; Shefler, T.; King, J. Y.; Papenkova, M.; Treffers, R. R.; Filippenko, A. V. (1998). "Supernova 1998eb in NGC 1961". International Astronomical Union Circular (7016): 1. Bibcode:1998IAUC.7016....1L.
  8. ↑ "SN 1998eb". Transient Name Server. IAU . Retrieved 12 December 2024.
  9. ↑ Qiu, Y. L.; Hu, J. Y.; Papenkova, M.; Schwartz, M. (2001). "Supernova 2001is in NGC 1961". International Astronomical Union Circular (7782): 1. Bibcode:2001IAUC.7782....1Q.
  10. ↑ "SN 2001is". Transient Name Server. IAU . Retrieved 12 December 2024.
  11. ↑ Itagaki, K.; Nakano, S.; Elenin, L.; Molotov, I.; Ochner, P.; Tomasella, L.; Pastorello, A.; Benetti, S.; Cappellaro, E.; Turatto, M. (2013). "Supernova 2013cc in NGC 1961 = PSN J05415876+6921409". Central Bureau Electronic Telegrams. 3512: 1. Bibcode:2013CBET.3512....1I.
  12. ↑ "SN 2013cc". Transient Name Server. IAU . Retrieved 12 December 2024.
  13. ↑ Itagaki, Koichi. "Transient Name Server SN 2021vaz Discovery Certificate". Transient Name Server. TNS. Retrieved 7 August 2021.
  14. ↑ "SN 2021vaz". Transient Name Server. IAU . Retrieved 12 December 2024.
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