astro.wikisort.org - Galaxy
The Sculptor Dwarf Irregular Galaxy (SDIG) is an irregular galaxy in the constellation Sculptor. It is a member of the NGC 7793 subgroup of the Sculptor Group.[1] The galaxy was discovered in 1976.[citation needed]
| Sculptor Dwarf Irregular | |
|---|---|
 Sculptor Dwarf Irregular Galaxy close up by Hubble Space Telescope. | |
| Observation data (J2000 epoch) | |
| Constellation | Sculptor |
| Right ascension | 00h 08m 13.36s[1] |
| Declination | −34° 34′ 42.0″[1] |
| Redshift | 221 ± 6 km/s[2] |
| Distance | 10.44 ± 0.33 Mly (3.2 ± 0.1 Mpc)[1] |
| Apparent magnitude (V) | 15.5[2] |
| Absolute magnitude (V) | −11.87[1] |
| Characteristics | |
| Type | dIrr[1] |
| Apparent size (V) | 1′.1 × 0′.9[2] |
| Half-light radius (apparent) | 29″.4 ± 1″.6[1] |
| Other designations | |
| SDIG,[2] PGC 621,[2] ESO 349-031[2] | |
Nearby galaxies and galaxy group information
The Sculptor Dwarf Irregular Galaxy and the dwarf galaxy UGCA 442 are both companions of the spiral galaxy NGC 7793.[3] These galaxies all lie within the Sculptor Group, a weakly bound, filament-like group of galaxies located near the Local Group.[3]
See also
- Sculptor Dwarf Galaxy – a dwarf spheroidal or elliptical galaxy, also in Sculptor, but significantly closer; a satellite of the Milky Way.
References
- Lianou, S.; Cole, A. A. (2013). "The star formation history of the Sculptor dwarf irregular galaxy". Astronomy & Astrophysics. 549: A47. arXiv:1211.0137. Bibcode:2013A&A...549A..47L. doi:10.1051/0004-6361/201220193. S2CID 55237783.
- "NASA/IPAC Extragalactic Database". Results for Sculptor Dwarf Irregular. Retrieved 2007-03-15.
- I. D. Karachentsev; E. K. Grebel; M. E. Sharina; A. E. Dolphin; et al. (2003). "Distances to nearby galaxies in Sculptor". Astronomy and Astrophysics (abstract). 404 (1): 93–111. arXiv:astro-ph/0302045. Bibcode:2003A&A...404...93K. doi:10.1051/0004-6361:20030170. S2CID 54977869.
External links
- The Sculptor Dwarf Irregular Galaxy on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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