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  • 21 Aug, 2019

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NGC 1533

NGC 1533 is a barred lenticular galaxy with faint spiral structure in the constellation Dorado. The seventh-brightest member of the Dorado Group and 1° off the group's center, it is surrounded by a vast arc or ring of H I which is connected to IC 2038 and IC 2039. The ring orbits around 32 kpc from the center. As is typical of lenticular galaxies, star formation is weak in NGC 1533. Using both the surface brightness fluctuation (SBF) and globular cluster luminosity function (GCLF) methods, its distance was estimated in 2007 to be 19.4 ± 1.1 Mpc and 18.6 ± 2.0 Mpc respectively. Averaging these together gives a distance of around 19 million parsecs or 62 million light-years from earth. In 1970, a supernova was detected in NGC 1533.

NGC 1533 was discovered by John Herschel on December 5, 1834.

Notes

  1. average(19.4 ± 1.1, 18.6 ± 2.0) = ((19.4 + 18.6) / 2) ± ((1.1 + 2.0) / 2) = 19.0 ± 1.1
  2. 35 kpc calculated assuming a distance of 21 Mpc converts to a distance of 32 (35 ÷ 21 × 19) kpc for the current distance estimate of 19 Mpc

References

  1. ^ "NASA/IPAC Extragalactic Database". Results for NGC 1533. Retrieved 2008-06-26.
  2. ^ DeGraaff, Regina Barber; Blakeslee, John P.; Meurer, Gerhardt R.; Putman, Mary E. (December 2007). "A Galaxy in Transition: Structure, Globular Clusters, and Distance of the Star-Forming S0 Galaxy NGC 1533 in Dorado". The Astrophysical Journal. 671 (2): 1624–1639. arXiv:0710.0893. Bibcode:2007ApJ...671.1624D. doi:10.1086/523640. S2CID 14312626.
  3. ^ Ryan-Weber, Emma; Webster, Rachel; Bekki, Kenji (April 2003). "Galactic Recycling: The HI Ring Around NGC 1533". In Jessica L. Rosenberg; Mary E. Putman (eds.). The IGM/Galaxy Connection. Astrophysics and Space Science Library. Vol. 281. Dordrecht: Kluwer Academic Publishers. pp. 223–228. arXiv:astro-ph/0209321. Bibcode:2003ASSL..281..223R. doi:10.1007/978-94-010-0115-1_40. ISBN 978-1-4020-1289-1. S2CID 16899046.
  4. ^ Evans, R. (1970). "Supernova in NGC 1533". IAU Circ. 2279 (2279): 1. Bibcode:1970IAUC.2279....1E.