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COMPOSITION OF THE ORION NEBULA

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Temperature and Density Calculations<br />

• Strength of the<br />

forbidden lines is very<br />

sensitive to<br />

temperature<br />

• Due to weak/noisy lines<br />

needed to determine<br />

€<br />

temperature, values<br />

presented here are<br />

from the literature€<br />

€<br />

T e (OIII) =<br />

T e(NII) =<br />

(4959 +5007)<br />

4363<br />

(6548 + 6584)<br />

5755<br />

N e (SII) = 6716<br />

6731

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