astro.wikisort.org - Galaxy
NGC 5474 is a peculiar dwarf galaxy in the constellation Ursa Major. It is one of several companion galaxies of the Pinwheel Galaxy (M101), a grand-design spiral galaxy.[4][5] Among the Pinwheel Galaxy's companions, this galaxy is the closest to the Pinwheel Galaxy itself.[4] The gravitational interaction between NGC 5474 and the Pinwheel Galaxy has strongly distorted the former. As a result, the disk is offset relative to the nucleus.[4][6] The star formation in this galaxy (as traced by hydrogen spectral line emission) is also offset from the nucleus.[6] NGC 5474 shows some signs of a spiral structure. As a result, this galaxy is often classified as a dwarf spiral galaxy, a relatively rare group of dwarf galaxies.
| NGC 5474 | |
|---|---|
 Hubble image of NGC 5474.[1] | |
| Observation data (J2000 epoch) | |
| Constellation | Ursa Major[2] |
| Right ascension | 14h 05m 01.6s[3] |
| Declination | +53° 39′ 44″[3] |
| Redshift | 273 ± 9 km/s[3] |
| Distance | 21.2 ± 2.2 Mly (6.5 ± 0.7 Mpc)[3] |
| Apparent magnitude (V) | 11.3[3] |
| Characteristics | |
| Type | SA(s)cd pec[3] |
| Apparent size (V) | 4′.8 × 4′.3[3] |
| Other designations | |
| UGC 9013,[3] PGC 50216[3] | |
See also
- Peculiar galaxy
- Dwarf galaxy
- Ursa Major (constellation)
References
- "A dwarf galaxy ravaged by grand design". Picture of the Week. ESA/Hubble. Retrieved 17 June 2014.
- R. W. Sinnott, ed. (1988). The Complete New General Catalogue and Index Catalogue of Nebulae and Star Clusters by J. L. E. Dreyer. Sky Publishing Corporation and Cambridge University Press. ISBN 978-0-933346-51-2.
- "NASA/IPAC Extragalactic Database". Results for NGC 5474. Retrieved 2006-09-20.
- Drozdovsky, I. O.; Karachentsev, I. D. (2000). "Photometric distances to six bright resolved galaxies". Astronomy and Astrophysics Supplement. 142 (3): 425–432. Bibcode:2000A&AS..142..425D. doi:10.1051/aas:2000155.
- A. Sandage; J. Bedke (1994). Carnegie Atlas of Galaxies. Washington, D.C.: Carnegie Institution of Washington. ISBN 978-0-87279-667-6.
- R. M. Gonzalez Delgado; E. Perez; C. Tadhunter; J. M. Vilchez; J. M. Rodriguez-Espinosa (2000). "H II Region Population in a Sample of Nearby Galaxies with Nuclear Activity. I. Data and General Results". Astrophysical Journal Supplement. 108 (1): 155. Bibcode:1997ApJS..108..155G. doi:10.1086/312951.
External links
Media related to NGC 5474 at Wikimedia Commons- NGC 5474 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
- SEDS
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На других языках
[de] NGC 5474
NGC 5474 ist eine spiralförmige Zwerggalaxie vom Typ Sc im Sternbild Großer Bär und 17 Millionen Lichtjahre von der Milchstraße entfernt. Sie wurde am 1. Mai 1788 von William Herschel entdeckt.[3]- [en] NGC 5474
[es] NGC 5474
NGC 5474 es una galaxia enana peculiar en la constelación de la Osa Mayor. Es una de las numerosas galaxias satélite que acompañan a la Galaxia del Molinete (M101), una galaxia espiral de gran diseño,[3][4] siendo la más próxima a la M101.[ru] NGC 5474
NGC 5474 (другие обозначения — UGC 9013, MCG 9-23-32, ZWG 272.23, PGC 50216) — галактика в созвездии Большая Медведица, самый близкий спутник галактики M101.Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
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