NGC 3338
| NGC 3338 | |
|---|---|
 NGC 3338 imaged by the 32-inch Schulman Telescope in Mount Lemmon Observatory | |
| Observation data (J2000 epoch) | |
| Constellation | Leo |
| Right ascension | 10h 42m 07.5197s[1] |
| Declination | +13° 44′ 49.380″[1] |
| Redshift | 0.004336 ± 0.000002 [1] |
| Heliocentric radial velocity | 1,300 ± 1 km/s[1] |
| Distance | 73.3 ± 14.7 Mly (22.5 ± 4.5 Mpc)[1] |
| Group or cluster | NGC 3338 Group |
| Apparent magnitude (V) | 10.9[2] |
| Characteristics | |
| Type | SA(s)c [1] |
| Size | ~129,000 ly (39.4 kpc) (estimated)[1] |
| Apparent size (V) | 3.38′ × 1.26′[1] |
| Other designations | |
| IRAS 10394+1400, UGC 5826, MCG +02-27-041, PGC 31883, CGCG 065-087[1] | |
NGC 3338 is a spiral galaxy in the constellation Leo. The galaxy lies about 75 million light years away from Earth, which means, given its apparent dimensions, that NGC 3338 is approximately 130,000 light years across.[1] It was discovered by William Herschel on March 19, 1784.[3]
NGC 3338 is categorised as a SA(s)c galaxy, meaning it is a spiral galaxy with no bar. It has a small elliptical bulge. The stellar velocity dispertion in the pseudobulge of NGC 3338 is 78 ± 2 km/s.[4] The galaxy has two thin and well ordered spiral arms, but its overall pattern is between a grand design galaxy and multiple spiral arms as there are many spiral fragments between the arms.[5] At their beginning the arms have different pitch angles but are symmetric and diffuse in their outer parts. The arms are bright for about half a revolution and their fainter extremities can be traced for another half revolution.[6] There are some knots in the disk and HII regions, the largest of which more than two arcseconds across.[5]
NGC 3338 is the foremost galaxy of the NGC 3338 Group.[7] Other members of the group include NGC 3346, NGC 3389, UGC 5832 and Mrk 1263.[8] At least 8 satellite galaxies have been found around NGC 3338 and five more are possible satellites.[9] The group is part of the Leo II Groups, a large cloud of galaxies in the Virgo Supercluster.[10]
References
[edit]- ^ a b c d e f g h i j "Results for object NGC 3338". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 15 February 2025.
- ^ "Revised NGC Data for NGC 3338". spider.seds.org. Retrieved 30 March 2024.
- ^ Seligman, Courtney. "NGC 3338 (= PGC 31883)". Celestial Atlas. Retrieved 19 November 2018.
- ^ Kormendy, John; Drory, Niv; Bender, Ralf; Cornell, Mark E. (1 November 2010). "Bulgeless Giant Galaxies Challenge Our Picture of Galaxy Formation by Hierarchical Clustering". The Astrophysical Journal. 723 (1): 54–80. arXiv:1009.3015. Bibcode:2010ApJ...723...54K. doi:10.1088/0004-637X/723/1/54.
- ^ a b Sandage, A., Bedke, J. (1994), The Carnegie Atlas of Galaxies. Volume I, Carnegie Institution of Washington
- ^ 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. arXiv:astro-ph/0206320. Bibcode:2002ApJS..143...73E. doi:10.1086/342340.
- ^ Makarov, Dmitry; Karachentsev, Igor (21 April 2011). "Galaxy groups and clouds in the local (z~ 0.01) Universe". Monthly Notices of the Royal Astronomical Society. 412 (4): 2498–2520. arXiv:1011.6277. Bibcode:2011MNRAS.412.2498M. doi:10.1111/j.1365-2966.2010.18071.x. S2CID 119194025. Retrieved 1 February 2025.
- ^ Garcia, A. M. (1 July 1993). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series. 100: 47–90. Bibcode:1993A&AS..100...47G. ISSN 0365-0138.
- ^ Nashimoto, Masashi; Tanaka, Masayuki; Chiba, Masashi; Hayashi, Kohei; Komiyama, Yutaka; Okamoto, Takashi (1 September 2022). "The Missing Satellite Problem outside of the Local Group. II. Statistical Properties of Satellites of Milky Way–like Galaxies". The Astrophysical Journal. 936 (1): 38. arXiv:2207.11992. Bibcode:2022ApJ...936...38N. doi:10.3847/1538-4357/ac83a4.
- ^ "The Leo II Groups". www.atlasoftheuniverse.com. Retrieved 12 February 2025.
External links
[edit]
- NGC 3338 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
