NGC 2559
| NGC 2559 | |
|---|---|
 NGC 2559 by PanSTARRS | |
| Observation data (J2000 epoch) | |
| Constellation | Puppis |
| Right ascension | 08h 17m 06.1s[1] |
| Declination | −27° 27′ 20″[1] |
| Redshift | 0.005200 ± 0.000017 [1] |
| Heliocentric radial velocity | 1,559 ± 5 km/s[1] |
| Distance | 58.1 ± 5.0 Mly (17.8 ± 1.5 Mpc)[1] |
| Apparent magnitude (V) | 10.9[2] |
| Characteristics | |
| Type | SB(s)bc pec [1] |
| Apparent size (V) | 4.13′ × 2.07′[1] |
| Other designations | |
| UGCA 136, ESO 494-41, MCG -04-20-003, VV 475, IRAS 08150-2718, PGC 23222 | |
NGC 2559 is a barred spiral galaxy in the constellation Puppis. The galaxy lies about 60 million light years away from Earth based on redshift independent methods, which means, given its apparent dimensions, that NGC 2559 is approximately 90,000 light years across.[1] It was discovered by John Herschel on February 5, 1837.[3]
Characteristics
[edit]The galaxy has a bar and a small elliptical bulge, which is obstructed by large amounts of dust. From the end of the bar emerge two spiral arms with several knots and twists. The east arm has more bright knots than the west one. The position angle of the galaxy is variable, which is centrally at an north-south axis and rotates to northeast-southwest peripherally.[4] The outer arms of the galaxy are faint.[5] The galaxy extends to 6.6 arcminutes when its fainter extremities are considered, which corresponds to 110,000 light years.[1] In the centre of the galaxy lies a supermassive black hole, whose mass is estimated to be 106.64 ± 0.97 (0.5 - 37 million) M☉, based on the pitch angle of the spiral arms.[6] The star formation rate of the galaxy is estimated to be 3 M☉ per year.[7]
Supernova
[edit]One supernova has been observed in NGC 2559, SN 2002hc. The supernova was detected by Katzman Automatic Imaging Telescope on 24 October 2002, at an apparent magnitude of 17. The spectrum showed it was a type II supernova.[8]
Nearby galaxies
[edit]NGC 2559 is the foremost galaxy in the NGC 2559 group, which also includes NGC 2566, and IC 2311.[9] There is a possible companion galaxy to NGC 2559 4 arcminutes to the east.[5] The group is noted for containing many hydrogen deficient galaxies.[10] Other nearby galaxies include NGC 2613 and ESO 563-13.[9] It is part of the Puppis Wall, which connects the Antlia Cluster with the Fornax Cluster.[10]
References
[edit]- ^ a b c d e f g h i "NASA/IPAC Extragalactic Database". Results for NGC 2559. Retrieved 12 February 2025.
- ^ "Revised NGC Data for NGC 2559". spider.seds.org. Retrieved 30 March 2024.
- ^ Seligman, Courtney. "NGC 2559 (= PGC 18602)". Celestial Atlas. Retrieved 19 November 2018.
- ^ Eskridge, Paul B.; Frogel, Jay A.; Pogge, Richard W.; Quillen, Alice C.; Berlind, Andreas A.; Davies, Roger L.; DePoy, D. L.; Gilbert, Karoline M.; Houdashelt, Mark L.; Kuchinski, Leslie E.; Ramirez, Solange V.; Sellgren, K.; Stutz, Amelia; Terndrup, Donald M.; Tiede, Glenn P. (November 2002). "Near‐Infrared and Optical Morphology of Spiral Galaxies". The Astrophysical Journal Supplement Series. 143 (1): 73–111. doi:10.1086/342340.
- ^ a b Corwin, H. G.; de Vaucouleurs, A.; de Vaucouleurs, G (1985) Southern Galaxy Catalogue. University of Texas
- ^ Davis, Benjamin L.; Berrier, Joel C.; Johns, Lucas; Shields, Douglas W.; Hartley, Matthew T.; Kennefick, Daniel; Kennefick, Julia; Seigar, Marc S.; Lacy, Claud H. S. (20 June 2014). "The Black Hole Mass Function Derived from Local Spiral Galaxies". The Astrophysical Journal. 789 (2): 124. arXiv:1405.5876. Bibcode:2014ApJ...789..124D. doi:10.1088/0004-637X/789/2/124. S2CID 119302157.
- ^ Mackenzie, Todd; et al. (1 August 2011). "A pilot study for the SCUBA-2 'All-Sky' Survey: A pilot study for the SCUBA-2 All-Sky Survey". Monthly Notices of the Royal Astronomical Society. 415 (2): 1950–1960. doi:10.1111/j.1365-2966.2011.18840.x.
- ^ Green, Daniel (25 October 2002). "IAUC 7999: 2002hb, 2002hc, 2002hd; 2002gy, 2002ha". International Astronomical Union Circular. 7999.
- ^ a b Fouque, P.; Gourgoulhon, E.; Chamaraux, P.; Paturel, G. (May 1992). "Groups of galaxies within 80 Mpc. II - The catalogue of groups and group members". Astronomy and Astrophysics Supplement Series. 93: 211–233.
- ^ a b Chamaraux, P.; Masnou, J.-L. (11 January 2004). "Spatial distribution of galaxies in the Puppis region". Monthly Notices of the Royal Astronomical Society. 347 (2): 541–555. doi:10.1111/j.1365-2966.2004.07226.x.
External links
[edit]
- NGC 2559 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
