Sextans Dwarf Spheroidal

In today's world, Sextans Dwarf Spheroidal has become a topic of great relevance and interest to a wide range of individuals, organizations and communities. With the passage of time, Sextans Dwarf Spheroidal has gained importance and attention, generating debates, research and discussions in different areas. Whether due to its impact on society, its relevance in academia, its influence on popular culture or its relevance in history, Sextans Dwarf Spheroidal continues to be a topic of constant interest and discussion. In this article, we will explore different aspects of Sextans Dwarf Spheroidal, from its origin to its present day, analyzing its impact and relevance in various contexts.

Sextans Dwarf Spheroidal
Observation data (J2000 epoch)
ConstellationSextans
Right ascension10h 13m 02.9s
Declination−01° 36′ 53″
Redshift224 ± 2 km/s
Distance290 ± 30 kly (90 ± 10 kpc)
Apparent magnitude (V)10.4
Characteristics
TypedSph
Apparent size (V)30.0′ × 12.0′
Notable featuressatellite galaxy of the Milky Way
Other designations
Sextans I, LEDA 88608

The Sextans Dwarf Spheroidal is a dwarf spheroidal galaxy that was discovered in 1990 by Mike Irwin as the 8th satellite of the Milky Way, 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). The distance to the galaxy is 320,000 light-years and the diameter is 8,400 light-years along its major axis.

Like other dwarf spheroidal galaxies, the Sextans Dwarf's population consists of old, metal-poor stars: one study found that the majority of stars have a metallicity between = −3.2 and −1.4. An analysis of several stars found them to also be deficient in barium, except for one star.

References

  1. ^ a b c d e f g h "NASA/IPAC Extragalactic Database". Results for Sextans Dwarf. 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. S2CID 120973010.
  4. ^ M. J. Irwin; P. S. Bunclark; M. T. Bridgeland; R. G. 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.
  5. ^ Hartmut Frommert. "Sextans Dwarf". SEDS. Retrieved 2015-03-21.
  6. ^ Mashonkina, L.; Pakhomov, Yu V.; Sitnova, T.; Jablonka, P.; Yakovleva, S. A.; Belyaev, A. K. (2022). "The formation of the Milky Way halo and its dwarf satellites: A NLTE–1D abundance analysis. V. The Sextans galaxy". Monthly Notices of the Royal Astronomical Society. 509 (3): 3626–3642. arXiv:2110.09402. doi:10.1093/mnras/stab3189.


Wikious
Boobota
Sagapedia