Sculptor Dwarf Irregular Galaxy
Encyclopedia
The Sculptor Dwarf Irregular Galaxy (SDIG) is an irregular galaxy
in the constellation
Sculptor. The galaxy was discovered in 1976.
UGCA 442 are both companions of the spiral galaxy
NGC 7793
. These galaxies all lie within the Sculptor Group
, a weakly bound, filament-like group of galaxies located near the Local Group
.
Irregular galaxy
An irregular galaxy is a galaxy that does not have a distinct regular shape, like a spiral or an elliptical galaxy. The shape of an irregular galaxy is uncommon – they do not fall into any of the regular classes of the Hubble sequence, and they are often chaotic in appearance, with neither a...
in the constellation
Constellation
In modern astronomy, a constellation is an internationally defined area of the celestial sphere. These areas are grouped around asterisms, patterns formed by prominent stars within apparent proximity to one another on Earth's night sky....
Sculptor. The galaxy was discovered in 1976.
Nearby galaxies and galaxy group information
The Sculptor Dwarf Irregular Galaxy and the dwarf galaxyDwarf galaxy
A dwarf galaxy is a small galaxy composed of up to several billion stars, a small number compared to our own Milky Way's 200-400 billion stars...
UGCA 442 are both companions of the spiral galaxy
Spiral galaxy
A spiral galaxy is a certain kind of galaxy originally described by Edwin Hubble in his 1936 work The Realm of the Nebulae and, as such, forms part of the Hubble sequence. Spiral galaxies consist of a flat, rotating disk containing stars, gas and dust, and a central concentration of stars known as...
NGC 7793
NGC 7793
NGC 7793 is a spiral galaxy about 12.7 million light-years away in the constellation Sculptor. It was discovered in 1826 by James Dunlop.-Galaxy group information:...
. These galaxies all lie within the Sculptor Group
Sculptor Group
The Sculptor Group is a loose group of galaxies near the south galactic pole. The group is one of the closest groups of galaxies to the Local Group; the distance to the center of the group from the Milky Way is approximately 3.9 Mpc....
, a weakly bound, filament-like group of galaxies located near the Local Group
Local Group
The Local Group is the group of galaxies that includes Earth's galaxy, the Milky Way. The group comprises more than 30 galaxies , with its gravitational center located somewhere between the Milky Way and the Andromeda Galaxy...
.
See also
- Sculptor Dwarf GalaxySculptor Dwarf GalaxyThe Sculptor Dwarf Galaxy is a dwarf spheroidal galaxy that is a satellite of the Milky Way. The galaxy lies within the constellation Sculptor. It was discovered in 1937 by Harlow Shapley. The galaxy is located about 290,000 light-years away from the solar system...
– a dwarf spheroidal or elliptical galaxy, also in Sculptor, but significantly closer; a satellite of the Milky Way.