NGC 5474
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An ultraviolet image of NGC 5474 taken with GALEX. |
|
| Observation data: J2000 epoch | |
|---|---|
| Constellation: | Ursa Major |
| Right ascension: | 14h 05m 01.6s[1] |
| Declination: | +53° 39′ 44″[1] |
| Redshift: | 273 ± 9 km/s[1] |
| Distance: | 22 Mly (6.8 Mpc)[2] |
| Type: | SA(s)cd pec[1] |
| Apparent dimensions (V): | 4′.8 × 4′.3[1] |
| Apparent magnitude (V): | 11.3[1] |
| Notable features: | |
| Other designations | |
| UGC 9013,[1] PGC 50216[1] | |
| See also: Galaxy, List of galaxies | |
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[3][2]. Among the Pinwheel Galaxy's companions, this galaxy is the closest to the Pinwheel Galaxy itself[2]. The gravitational interaction between NGC 5474 and the Pinwheel Galaxy have strongly distorted the galaxy. As a result, the disk is offset relative to the nucleus[2][4]. The star formation in this galaxy (as traced by hydrogen spectral line emission) is also offset from the nucleus[4].
[edit] References
- ^ a b c d e f g h NASA/IPAC Extragalactic Database. Results for NGC 5474. Retrieved on September 20, 2006.
- ^ a b c d Drozdovsky, I. O.; Karachentsev, I. D. (2000). "Photometric distances to six bright resolved galaxies". Astronomy and Astrophysics Supplement 142: 425-432.
- ^ A. Sandage, J. Bedke (1994). Carnegie Atlas of Galaxies. Washington, D.C.: Carnegie Institution of Washington. ISBN 0-87279-667-1.
- ^ a b 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: 155.
