Hubble Parameter

  • Thread starter UMich1344
  • Start date
  • #1
27
0
What is the role of Cepheid stars in determining the Hubble parameter?
 

Answers and Replies

  • #2
mgb_phys
Science Advisor
Homework Helper
7,774
13
Cepheids change in brightness, the period depends on the absolute magnitude.
By measuring the period you know how bright the star really is, you can measure how bright it appears and so find the distance.
 

Related Threads on Hubble Parameter

  • Last Post
Replies
7
Views
2K
  • Last Post
Replies
15
Views
3K
  • Last Post
Replies
6
Views
2K
  • Last Post
Replies
9
Views
4K
  • Last Post
Replies
5
Views
2K
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
2
Views
730
  • Last Post
Replies
8
Views
3K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
7
Views
3K
Top