Question about the Na-O anti correlation

  • #1

Main Question or Discussion Point

I'm trying to write a research paper in astronomy, and while I was brainstorming ideas, I came across
supermassive stars and the abundance anomalies of proton-capture elements in globular clusters, such as the C-N, Na-O, Mg-Al and Na-F anticorrelations. I tried searching everywhere for an understanding of this topic, and I simply do not understand what or how these "anticorrelations" work. Thank you
 

Answers and Replies

  • #2
stefan r
Science Advisor
Gold Member
817
232
I understood the basic idea was that one element is abundant(relatively speaking) in the gas cloud that produces the first generation of stars in the cluster. The large stars of that first generation in that cloud burn that element and also produce the second element. They blow the second element into the cloud through stellar winds and supernovae. The second generation of stars born in the cloud show an increase in element number two and a depletion in element number one. We see the small long lived stars from both generations. "Generations" is cycles of starbursts in that cloud/cluster. The entire cloud could have been seeded with metals from other stars.

...the abundance anomalies of proton-capture elements in globular clusters, such as the C-N...
The CNO cycle tends to produce more N than C or O. The wind from type B, O, or WR stars would have less carbon and more nitrogen than the original cloud.
 

Related Threads on Question about the Na-O anti correlation

  • Last Post
Replies
1
Views
3K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
22
Views
5K
  • Last Post
3
Replies
57
Views
7K
  • Last Post
Replies
11
Views
3K
  • Last Post
Replies
9
Views
4K
  • Last Post
Replies
24
Views
8K
  • Last Post
Replies
8
Views
3K
Replies
4
Views
4K
Top