Sculptor Dwarf Irregular Galaxy Explained

Sculptor Dwarf Irregular
Epoch:	J2000
Type:	dIrr^[1]
Half Light Radius Arcminsec:	29.4 ± 1.6
Z:	221 ± 6 km/s^[2]
Appmag V:	15.5
Absmag V:	-11.87
Size V:	1.1 × 0.9
Constellation Name:	Sculptor
Names:	SDIG, PGC 621, ESO 349-031

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]

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.

See also

• Sculptor Dwarf Galaxy – a dwarf spheroidal or elliptical galaxy, also in Sculptor, but significantly closer; a satellite of the Milky Way.

Notes and References

1. 1211.0137. 10.1051/0004-6361/201220193. 2013A&A...549A..47L. The star formation history of the Sculptor dwarf irregular galaxy. 2013. Lianou. S.. Cole. A. A.. 55237783. Astronomy & Astrophysics. 549. A47.
2. Web site: NASA/IPAC Extragalactic Database . Results for Sculptor Dwarf Irregular . 2007-03-15 .
3. 4. I. D. Karachentsev. E. K. Grebel. M. E. Sharina. A. E. Dolphin. D. Geisler. P. Guhathakrta. P. W. Hodge. V. E. Karachentseva. A. Sarajedini. P. Seitzer . 54977869. Distances to nearby galaxies in Sculptor . Astronomy and Astrophysics . 2003 . 404 . 1 . 93–111 . 2003A&A...404...93K . 10.1051/0004-6361:20030170 . abstract. astro-ph/0302045 .