What is column density in astronomy?

  • #1
ray_mcintos
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TL;DR Summary
I have read about column density but I am unable to get a clear idea about it.
What is column density in astronomy?
 

Answers and Replies

  • #2
berkeman
Mentor
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Welcome to the PF.
Summary:: I have read about column density but I am unable to get a clear idea about it.

What is column density in astronomy?
Could you post some links to your reading so far, and point out what is confusing? Doing a Google search on your thread title turns up lots of good hits, IMO...

1589831322164.png

https://en.wikipedia.org/wiki/Area_density

https://academic.oup.com/mnras/article/400/4/2050/1746878

http://www.as.utexas.edu/astronomy/education/spring02/scalo/aikawa.pdf
 
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  • #3
ray_mcintos
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https://iopscience.iop.org/article/10.1086/680323/pdf

Section 4 in the above link, I was trying to understand the way to calculate but I am not clear about the derivation and in the section 15 there are some examples of column density calculation that one too.
 

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