Sextans Dwarf Spheroidal

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) 12.[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 Milky Way at 224 km/s.

References

  1. ^ a b c d e f g h "NASA/IPAC Extragalactic Database". Results for Sextans Dwarf. http://nedwww.ipac.caltech.edu/. Retrieved 2006-11-29. 
  2. ^ 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. 
  3. ^ 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. 
  4. ^ "Sextans Dwarf". http://www.seds.org/~spider/spider/LG/sex_dw.html. Retrieved 2009-06-11. 
  5. ^ 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. 
Location
Galactic core
Spiral arms
Satellite galaxies
Other

Coordinates: 10h 13m 02.9s, −01° 36′ 53″