What is the electron density of stars in their atmospheres?

Click For Summary

Discussion Overview

The discussion centers on the electron density of stars, specifically within their atmospheres. Participants explore methods for estimating electron densities and seek resources for obtaining specific values relevant to their research.

Discussion Character

  • Exploratory, Technical explanation, Homework-related

Main Points Raised

  • One participant inquires about sources for electron density values of stars.
  • Another participant suggests estimating electron density by assuming stars are primarily hydrogen and mentions the importance of knowing the star's composition for more accurate values.
  • A participant conducting research using the Stark effect expresses a need to compare their results with predetermined values and asks for sources of these values.
  • A suggestion is made to consult the book "Stellar Structure and Evolution" for information on electron densities, with a note that the availability of specific values may be uncertain.
  • A later reply clarifies the focus on electron density in the stellar atmosphere, acknowledging a previous oversight in specifying the region of interest.

Areas of Agreement / Disagreement

Participants do not reach a consensus on specific electron density values or methods, and multiple approaches and sources are discussed without resolution.

Contextual Notes

Limitations include the dependence on the star's composition for accurate estimates and the uncertainty regarding the availability of specific resources mentioned.

Who May Find This Useful

Researchers and students interested in astrophysics, particularly those studying stellar atmospheres and electron density measurements.

amalmirando
Messages
49
Reaction score
0
Hi,
Does anybody know a place where i can find a list of electron densities of stars?
 
Astronomy news on Phys.org
If you only need an estimate, consider the stars to be all hydrogen. The electron density follows from charge conservation. For more accuracy, look up the composition of the star, i.e. proportions of H-He-Li-etc.
 
your method is ok i guess. i''m currently conducting a research in determining electron density using the stark effect..i just want to check whether the pre determined values agree with my results...of course there are various methods to determine electron densities...do you know any place where i can get the values?
thanks for the help...
 
Well,
You can take a look in the book "Stellar Structure and Evolution" - R. Kippenhahn & A. Weigert. Once I've used this book and they talked about electron densities in the star, but I am not sure if they give values. If you do not have access to this book in any library you tell me, so I can take a look for you.

EDIT: I forgot to ask. Do you want to know the electron density in the star as a whole, or do you want the density in the core or atmosphere? If you need want the density as a whole, the estimate given is quite useful, or if you want for a Sun-like star you could also use the He abundance...
 
Last edited:
thanks a lot for the help...stupid of me to not mention which region...i'm looking for the electron density in the stellar atmosphere .i looked for the book you mentioned and didn't find it in our library .also looked for the ebook but it wasn't available too.
anyway ,thanks a lot for the help.
 

Similar threads

  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 49 ·
2
Replies
49
Views
6K
  • · Replies 17 ·
Replies
17
Views
6K
  • · Replies 87 ·
3
Replies
87
Views
10K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 4 ·
Replies
4
Views
4K