What is the electron density of stars in their atmospheres?

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SUMMARY

The discussion centers on determining the electron density of stars, particularly in their atmospheres. Participants suggest using the book "Stellar Structure and Evolution" by R. Kippenhahn & A. Weigert for reference, although its availability may be limited. The conversation highlights the importance of considering the star's composition, specifically hydrogen, helium, and lithium proportions, for accurate electron density calculations. The Stark effect is mentioned as a method for measuring electron density, emphasizing the need for precise values in astrophysical research.

PREREQUISITES
  • Understanding of electron density and its significance in astrophysics
  • Familiarity with the Stark effect for measuring electron densities
  • Knowledge of stellar composition, including hydrogen, helium, and lithium
  • Access to astrophysical literature, specifically "Stellar Structure and Evolution" by R. Kippenhahn & A. Weigert
NEXT STEPS
  • Research the Stark effect and its applications in astrophysics
  • Explore the electron density values for various types of stars
  • Investigate the composition of stars and its impact on electron density calculations
  • Locate alternative resources or databases for stellar electron density values
USEFUL FOR

Astronomers, astrophysicists, and researchers focused on stellar atmospheres and electron density measurements will benefit from this discussion.

amalmirando
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Hi,
Does anybody know a place where i can find a list of electron densities of stars?
 
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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.
 

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