Sextans Dwarf Spheroidal
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| Sextans Dwarf Spheroidal | |
|---|---|
| Observation data (J2000 epoch) | |
| Constellation | Sextans |
| Right ascension | 10h 13m 02.9s[1] |
| Declination | −01° 36′ 53″[1] |
| Redshift | 224 ± 2 km/s[1] |
| Distance | 290 ± 30 kly (90 ± 10 kpc)[2][3] |
| Type | dSph[1] |
| Apparent dimensions (V) | 30′.0 × 12′.0[1] |
| Apparent magnitude (V) | 10.4[1] |
| Notable features | satellite galaxy of the Milky Way |
| Other designations | |
| Sextans I,[1] LEDA 88608[1] | |
| See also: Galaxy, List of galaxies | |
The Sextans Dwarf Spheroidal is a dwarf spheroidal galaxy that was discovered in 1990 by Mike Irwin, M.T. Bridgeland, P.S. Bunclark and R.G. McMahon as the 8th satellite of the Milky Way,[4][5] and is named fittingly, as it is located in the constellation of Sextans. It is also an elliptical galaxy, and displays a redshift because it is receding from the Sun at 224 km/s (72 km/s from the Galaxy).
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 "NASA/IPAC Extragalactic Database". Results for Sextans Dwarf. Retrieved 2006-11-29.
- ↑ I. D. Karachentsev, V. E. Karachentseva, W. K. Hutchmeier, D. I. Makarov (2004). "A Catalog of Neighboring Galaxies". Astronomical Journal 127 (4): 2031–2068. Bibcode:2004AJ....127.2031K. doi:10.1086/382905.
- ↑ Karachentsev, I. D.; Kashibadze, O. G. (2006). "Masses of the local group and of the M81 group estimated from distortions in the local velocity field". Astrophysics 49 (1): 3–18. Bibcode:2006Ap.....49....3K. doi:10.1007/s10511-006-0002-6.
- ↑ "Sextans Dwarf". Retrieved 2009-06-11.
- ↑ M. J. Irwin, P. S. Bunclark, M. T. Bridgeland, R. G. McMahon, R. G.; Bunclark; Bridgeland; McMahon (1990). "A new satellite galaxy of the Milky Way in the constellation of Sextans". Monthly Notices of the Royal Astronomical Society 244: 16–19. Bibcode:1990MNRAS.244P..16I.
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Coordinates: 
10h 13m 02.9s, −01° 36′ 53″
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