Sculptor Dwarf Galaxy
The Sculptor dwarf galaxy (also elliptical Sculptor dwarf spheroidal galaxy or Sculptor dwarf galaxy ) is a dwarf galaxy early morphological type. It is a satellite of the Milky Way and is located in the constellation of Sculptor (Latin Sculptor ). It was discovered in 1937 by Harlow Shapley. The galaxy is approximately at a distance of 280,000 light-years from our solar system.
The Sculptor dwarf galaxy contains only 4 percent of the carbon and other heavy elements compared to the Milky Way. This makes them similar to the most primitive known to us in the universe galaxies.
Not to be confused is the Sculptor dwarf galaxy with irregular Sculptor dwarf galaxy - PGC 621 - in the Sculptor Group.
Properties
In 1999, researchers found the group Majewski et al. within the Sculptor dwarf galaxy splitting into two different stellar populations with respect to their metallicity. The one with a ratio [Fe / H] = -2.3 and the other with [Fe / H] = -1.5. Similar to many of the other dwarf galaxies of the Local Group, also showed a greater focus to the center of the galaxy the younger metal-rich population over the older metal- poor population.
More
- List of satellite galaxies of the Milky Way
- List of galaxies of the Local Group