NGC 1961
| NGC 1961 | |
|---|---|
 NGC 1961 imaged by the Hubble Space Telescope | |
| Observation data (J2000 epoch) | |
| Constellation | Camelopardalis |
| Right ascension | 05h 42m 04.6s[1] |
| Declination | +69° 22′ 42″[1] |
| Redshift | 3934 ± 1 km/s[1] |
| Distance | 173 Mly (53.4 Mpc)[1] |
| Apparent magnitude (V) | 10.9 |
| Characteristics | |
| Type | SAB(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]
Supernovae
[edit]Four supernovae have been observed in NGC 1961:
- SN 1998eb (type Ia, mag. 17.8) was discovered by the Lick Observatory Supernova Search (LOSS) on 17 August 1998.[5][6]
- SN 2001is (type Ib, mag. 17.6) was discovered by BAO and LOTOSS (Lick Observatory and Tenagra Observatory Supernova Searches) on 22 December 2001.[7][8]
- SN 2013cc (type II, mag. 17) was discovered by Kōichi Itagaki on 28 April 2013.[9][10]
- SN 2021vaz (type II, mag. 17.5) was discovered by Kōichi Itagaki on 5 August 2021.[11][12]
Gallery
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NGC 1961 by GALEX -
NGC 1961 by Mount Lemmon Observatory -
NGC 1961 by DSS -
NGC 1961 by Hubble Space Telescope
References
[edit]- ^ a b c d e f g "NASA/IPAC Extragalactic Database". Results for NGC 1961. Retrieved 2016-01-18.
- ^ 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.
- ^ 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.
- ^ 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.
- ^ 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.
- ^ "SN 1998eb". Transient Name Server. IAU. Retrieved 12 December 2024.
- ^ 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.
- ^ "SN 2001is". Transient Name Server. IAU. Retrieved 12 December 2024.
- ^ 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.
- ^ "SN 2013cc". Transient Name Server. IAU. Retrieved 12 December 2024.
- ^ Itagaki, Koichi. "Transient Name Server SN 2021vaz Discovery Certificate". Transient Name Server. TNS. Retrieved 7 August 2021.
- ^ "SN 2021vaz". Transient Name Server. IAU. Retrieved 12 December 2024.
External links
[edit]
Wikimedia Commons has media related to NGC 1961.
- NGC 1961 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
