Sculptor Dwarf

Sculptor Dwarf

For the nearby irregular galaxy within the constellation Sculptor, see Sculptor Dwarf Irregular Galaxy.
Sculptor Dwarf Elliptical Galaxy
Constellation Sculptor
Right ascension 01h 00m 09.3s[1]
Declination −33° 42′ 33″[1]
Redshift 110 ± 1 km/s[1]
Distance 290 ± 30 kly (90 ± 10 kpc)[2][3]
Type E[1]
Apparent dimensions (V) 39′.8 × 30′.9[1]
Apparent magnitude (V) 10.1[1]
Other designations
Sculptor Dwarf Spheroidal,[1] PGC 3589,[1] MCG-06-03-015
See also: Galaxy, List of galaxies

The Sculptor Dwarf Galaxy (also called the Sculptor Dwarf Elliptical Galaxy or the Sculptor Dwarf Spheroidal 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.[4][5] The galaxy is located about 290,000 light-years away from the solar system. The Sculptor Dwarf contains only 4 percent of the carbon and other heavy elements in our own galaxy, the Milky Way, making it similar to primitive galaxies seen at the edge of the universe.[6]

Metallicity

In 1999, Majewski et al. determined that the metallicity of Sculptor dwarf appears to be broken up into two distinct groups, one with [Fe/H] = -2.3 and the other with [Fe/H] = -1.5. Similar to many of the other Local Group galaxies, the older metal-poor segment appears more extended than the younger metal-rich segment.[7]

References

External links

  • The Sculptor Dwarf Galaxy on Articles and images

, −33° 42′ 33″