Sextans dwarf galaxy
Galaxy Sextans dwarf galaxy |
|
---|---|
AladinLite | |
Constellation | sextant |
Position equinox : J2000.0 , epoch : J2000.0 |
|
Right ascension | 10 h 13 m 02.9 s |
declination | -01 ° 36 ′ 53 ″ |
Appearance | |
Morphological type | dSph / dE3 |
Brightness (visual) | 10.4 mag |
Angular expansion | 30.0 ′ × 12.0 ′ |
Physical data | |
Affiliation | Local group |
Radial velocity | (224 ± 2) km / s |
distance | (290,000 ± 30,000) ly / (90,000 ± 10,000) pc |
history | |
discovery | Mike Irwin, MT Bridgeland,
PS Bunclark and RG McMahon |
Discovery date | 1990 |
Catalog names | |
PGC 88608 • |
The Sextans dwarf galaxy is a spheroidal dwarf galaxy (dSph). It was discovered in 1990 by astrophysicists Mike Irwin, MT Bridgeland, PS Bunclark and RG McMahon as the eighth satellite galaxy of the Milky Way in the constellation of the Sextant .
properties
The dwarf galaxy, also classified as dE3 , is moving away from the Milky Way at a speed of 224 km / s and shows a corresponding redshift . The galaxy has a distance of about 290,000 light years from our solar system .
additional
Individual evidence
- ↑ a b c d e f g h i NASA / IPAC EXTRAGALACTIC DATABASE
- ↑ a b c Sextans Dwarf . Retrieved June 11, 2009.
- ↑ Karachentsev, ID; Kashibadze, OG: Masses of the local group and of the M81 group estimated from distortions in the local velocity field . In: Astrophysics . 49, No. 1, 2006, pp. 3-18. bibcode : 2006Ap ..... 49 .... 3K . doi : 10.1007 / s10511-006-0002-6 .
- ↑ MJ Irwin, PS Bunclark, MT Bridgeland, RG McMahon, RG, Bunclark, Bridgeland, McMahon: A new satellite galaxy of the Milky Way in the constellation of Sextans . In: Monthly Notices of the Royal Astronomical Society . 244, 1990, pp. 16-19. bibcode : 1990MNRAS.244P..16I .