M32 E2 M87 E1 NGC 4125 Sa Galaxies M96 M104 Sb Galaxy M81 Sc Galaxies M51 Sba

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M32 E2 M87 E1 NGC 4125 Sa Galaxies M96 M104 Sb Galaxy M81 Sc Galaxies M51 Sba Powered By Docstoc
					Galaxies
The Great Debate




  Harlow Shapley                    Heber Curtis
                   April 26, 1920
Edwin Hubble
Hubble Tuning
Fork Diagram
The Local Group
Ellipticals




 M32 - E2



            NGC 4125


                       M87 - E1
Sa Galaxies




  M96



              M104
Sb Galaxy




            M81
Sc Galaxies
              M51
Sba Galaxies




               NGC 1097


  NGC 4477
SBb Galaxies




               NGC 4579
     M91
SBc Galaxies




     M109


               NGC 4123
Irregular Galaxy
  Large Magellenic Cloud
Peculiar Galaxies




   Centaurus A      M87
Seyfert Galaxies
           Often normal looking galaxies
           Very bright nuclei (AGN's)
               Typically 10,000X brighter than core of
                Milky Way
               Radio observations suggest that the
                nucleus is typically less than a light year
                across.
           All indicators point to violent explosive
            activity in the galactic nucleus.

           Total luminosity 10X Milky Way
 Double Lobed
Radio Galaxies

      Similar to Seyferts
      Most energy emitted in radio
      Distinct lobes extending many
       kpc from the galactic core.
      Energetic, small nucleus.
Clusters of Galaxies

           NGC 3628 - Sc




                      M65 - Sa
         M66 - Sb
Galactic Collisions
Large Scale Structure

				
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posted:6/26/2012
language:English
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