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Page 1: Ions%in%np %Configuraons%eldora.as.arizona.edu/~yshirley/Arizona/AST300B/AST300B_HIIProbe… · Table 4.1. Levels Number Of p Ion Lower Upper electrons -2 EXCITATION BY COLLISIONS
Page 2: Ions%in%np %Configuraons%eldora.as.arizona.edu/~yshirley/Arizona/AST300B/AST300B_HIIProbe… · Table 4.1. Levels Number Of p Ion Lower Upper electrons -2 EXCITATION BY COLLISIONS

Ions  in  np2  and  np4  Configura1ons  

Page 3: Ions%in%np %Configuraons%eldora.as.arizona.edu/~yshirley/Arizona/AST300B/AST300B_HIIProbe… · Table 4.1. Levels Number Of p Ion Lower Upper electrons -2 EXCITATION BY COLLISIONS

Table  of  Collision  Strengths  with  e-­‐  

Page 4: Ions%in%np %Configuraons%eldora.as.arizona.edu/~yshirley/Arizona/AST300B/AST300B_HIIProbe… · Table 4.1. Levels Number Of p Ion Lower Upper electrons -2 EXCITATION BY COLLISIONS

T  sensi1ve  Line  Ra1os    

From  Osterbrock  &  Ferland  –  AGN2  

Low  n  limit:    n  =  1  cm-­‐3  

Page 5: Ions%in%np %Configuraons%eldora.as.arizona.edu/~yshirley/Arizona/AST300B/AST300B_HIIProbe… · Table 4.1. Levels Number Of p Ion Lower Upper electrons -2 EXCITATION BY COLLISIONS

Ions  in  np3  Configura1ons  

Page 6: Ions%in%np %Configuraons%eldora.as.arizona.edu/~yshirley/Arizona/AST300B/AST300B_HIIProbe… · Table 4.1. Levels Number Of p Ion Lower Upper electrons -2 EXCITATION BY COLLISIONS

n  sensi1ve  Line  Ra1os  of  np3    Line

 Ra1

o  

Page 7: Ions%in%np %Configuraons%eldora.as.arizona.edu/~yshirley/Arizona/AST300B/AST300B_HIIProbe… · Table 4.1. Levels Number Of p Ion Lower Upper electrons -2 EXCITATION BY COLLISIONS

n  sensi1ve  Line  Ra1os  of  Fine  Structure  Lines    Line

 Ra1

o  

Page 8: Ions%in%np %Configuraons%eldora.as.arizona.edu/~yshirley/Arizona/AST300B/AST300B_HIIProbe… · Table 4.1. Levels Number Of p Ion Lower Upper electrons -2 EXCITATION BY COLLISIONS

HII  Region  Line  Cooling  Rates  Co

oling  rate

 

Total  cooling

 rate  

Orio

n  Tk  


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