Non-LTE in Stars. The Sun Early-type stars Other spectral types. NLTE in the Sun. Chromosphere and corona obviously in NLTE Photosphere? - LTE still dominant assumption for “stellar” work, but not for “solar” work
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Variations of 0.1 dex depending on which lines are included or not
Individual lines vary from 8.697 to 8.921
NLTE effects generally strengthen the lines
Also affected by granulation
Carbon, Nitrogen - ditto
Magnesium – Use Mg II as dominant species
EUV spectra of emerging active regions
Iron – still controversial! Why?
Values range from 7.42 to 7.50
If Fe II is used, NLTE effects very small
Disagreements about choice of lines, f-valuesDetails of Solar Abundances