NGC 3603-B

From Wikipedia, the free encyclopedia
Jump to: navigation, search
NGC 3603-B
NGC 3603b.jpg
HST image of NGC 3606, the cluster of stars that NGC 3603-B is in.
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Carina
Right ascension 11h 15m 07.41s
Declination −61° 15′ 38.6″
Apparent magnitude (V) 11.33
Spectral type WN6h+WN6h[1]
Apparent magnitude (B) 12.34
Apparent magnitude (J) 7.78
Apparent magnitude (H) 7.70
Apparent magnitude (K) 7.08
B−V color index 1.01
Proper motion (μ) RA: 2.4 mas/yr
Dec.: 2.8 mas/yr
Distance 24,500 ly
(7,600[1] pc)
Absolute magnitude (MV) –7.77±0.27[1]
Mass 132[1] M
Radius 34[1] R
Luminosity 2,900,000[1] L
Temperature 42,000[1] K
Other designations
NGC 3603-B, HD 97950B, CD-60 3452B, CPD-60 2732B, NGC 3603 MDS 23, WR 43b
Database references

NGC 3603-B is the most massive star in NGC 3603, about 20,000 light years from Earth. It is one of the most luminous stars known and also one of the most massive. The projected initial mass is 166 M, stretching current theories of star formation. It is a Wolf-Rayet star and part of the multi-star system HD 97950.


  1. ^ a b c d e f g Crowther, P. A.; Schnurr, O.; Hirschi, R.; Yusof, N.; Parker, R. J.; Goodwin, S. P.; Kassim, H. A. (2010). "The R136 star cluster hosts several stars whose individual masses greatly exceed the accepted 150 M stellar mass limit". Monthly Notices of the Royal Astronomical Society 408 (2): 731. arXiv:1007.3284. Bibcode:2010MNRAS.408..731C. doi:10.1111/j.1365-2966.2010.17167.x.  edit