NGC 1533

NGC 1533
Observation data (J2000 epoch)
Constellation	Dorado
Right ascension	04h 09m 51.8s[1]
Declination	-56° 07′ 06″[1]
Redshift	790 ± 5 km/s[1]
Distance	62 ± 4 Mly (19.0 ± 1.1 Mpc)[2][a]
Type	(L)SB(rs)00[1]
Apparent dimensions (V)	2′.8 × 2′.3[1]
Apparent magnitude (V)	11.7[1]
Other designations
PGC 14582[1]
See also: Galaxy, List of galaxies

NGC 1533 is a barred lenticular galaxy with faint spiral structure in the constellation Dorado and the seventh brightest member of the Dorado Group and 1°^[3] off the group's center.^[2] It is surrounded by a vast arc or ring of H I which is connected to IC 2038 and IC 2039.^[2] The ring orbits around 32 kpc from the center.^[3][b] It is typical of lenticular galaxies in that star formation is weak in NGC 1533.^[2] 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.^[2] Averaging these together gives a distance of around 19 million parsecs or 62 million light-years from earth.^[a] In 1970, a supernova was detected in NGC 1533.^[4]

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) ± ((1.1² + 2.0²)^0.5 / 2) = 19.0 ± 1.1
2. ^{^} 35 kpc calculated assuming a distance of 21 Mpc^[3] converts to a distance of 32 (35 ÷ 21 × 19) kpc for the current distance estimate of 19 Mpc

References

1. ^ ^{a b c d e f g} "NASA/IPAC Extragalactic Database". Results for NGC 1533. http://nedwww.ipac.caltech.edu/. Retrieved 2008-06-26. 
2. ^ ^{a b c d e} 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. Bibcode 2007ApJ...671.1624D. doi:10.1086/523640. http://www.iop.org/EJ/article/0004-637X/671/2/1624/72739.html. 
3. ^ ^{a b c} Ryan-Weber, Emma; Webster, Rachel; Bekki, Kenji (April 2003). Jessica L. Rosenberg and Mary E. Putman. ed. Galactic Recycling: The HI Ring Around NGC 1533. 281. Dordrecht: Kluwer Academic Publishers. 223. ISBN 1-4020-1289-6. http://adsabs.harvard.edu/abs/2003ASSL..281..223R 
4. ^ Evans, R. (1970). "Supernova in NGC 1533.". IAU Circ. 2279 (2279): 1. Bibcode 1970IAUC.2279....1E. 

External links

• NGC 1533 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
• Sky View image of NGC 1533

Coordinates: 04^h 09^m 51.8^s, −56° 07′ 06″