Name:____________________________ Lab Section: Online Date: _____________
Questions
1.
How would you
characterize the H-R diagrams of a young cluster and of an old cluster?
2.
What are the
effects of interstellar reddening on the distances and observed color of the
stars?
3.
If interstellar
reddening is not taken into account, how would the size of the galaxy and the
universe be affected?
4.
Is star
formation still occurring within our galaxy? Support your answer with the
cluster ages you have just determined.
|
Name _______________________ |
Section Online |
Date ___________ |
Ages and Distances of Clusters
|
Cluster Name |
Distance Modulus (mV-MV) |
Distance (Parsecs) |
Color Excess |
Absorption Factor (A=3XCE) |
Corrected Distance Modulus (mV-MV-A) |
Corrected Distance (Parsecs) |
Corrected Distance (LY) |
Color of Sequence Turn-off Point |
Age (yrs) |
|
M45 |
|
|
|
|
|
|
|
|
|
|
M11 |
|
|
|
|
|
|
|
|
|
|
M25 |
|
|
|
|
|
|
|
|
|
|
M44 |
|
|
|
|
|
|
|
|
|
|
M67 |
|
|
|
|
|
|
|
|
|
|
NGC 6791 |
|
|
|
|
|
|
|
|
|