Properties of Planetary Nebulae Worksheet

Part A: Chemical Composition

1) Table:

 

 

 

 

 

 

 

 

 

 

 

 

3) which lines are brightest in the Dumbbell nebula? H-alpha, H-beta or OIII?

Do your observations mean that there is more Oxygen than Hydrogen present in the nebula?

Give an alternative explanation for the differences in brightness.

 

 

 

 

Part B: Mass Loss History

2 & 3) Plots:

 

 

 

 

 

 

 

 

 

Are these plots similar?

4) How do your observations compare with the model?

 

 

 

 

5) What is the history of the mass loss from the central star?

 

 

 

 

Part C: Size and Age of the Dumbbell Nebula

1) Length of long axis:

2) Radius:

3) Angular Diameter:

4) Radius:

 

 

 

5) Age of nebula:

 

 

 

Part D: Mass Return Rate

1) Volume:

 

 

 

2) Mass:

 

 

3) Mass Returned to ISM each year: