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S & SB Elliptical Irregular
•
galaxies
galaxies galaxies
•
•Mass (M¤) 109 – 4x1011 105- 1013 108- 3x 1010
•
•Luminosity (L¤) 108- 2x1010 3x 105 – 1011 107 - 109
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•Diameter (kpc) 5-250 1-200 1-10
•
•
•% of observed 77% 20% 3%
•galaxies
•
•Hubble could be sequence in rotation properties
•ellipticals display little internal rotation – no
disk
•Sa, SBa – sufficient rotation to form disk but bulge
dominates