Hubble Galaxy Classification

Galaxy Name x y Type Velocity
(km/s)
Distance
(Mpc)
Light Travel Time
(yrs)
Earth-history Reference
NGC 7331       1105      
NGC 7317       6000      
NGC 6822       -57      
NGC 5866       672      
NGC 5195       565      
NGC 5055       587      
NGC 4594       963      
NGC 4565       1122      
NGC 4486       1180      
NGC 3034       203      
NGC 3031       95      
NGC 1398       1299      
NGC 1365       1636      
NGC 147       89      
Cartwheel       9212      
Andromeda (NGC 224)       -59      
3C273       43,700      

  1. The velocity of NGC224 is negative. What does this mean? What are the implications for applying the Hubble Law to this galaxy?

     

     

     

     

  2. The type of galaxy 3C273 is impossible to find from these images. Why?

     

     

     

     

  3. Look again at the color image of ngc224. What color are the arms? What color is the bulge? What do these colors tell you about the stellar populations in these regions?

     

     

     

     


© 1999 University of Washington
Revised: 3 February, 2000