title cool HII region model from Lexington Meeting punch overview last 11 "coolhii.ovr" punch results last 12 "coolhii.rlt" punch asserts last "coolhii.asr" normalize to "Ca B" 4861 init file="ism.ini" c Hbeta 4.93E36, L(total)4.30xHbeta iterate ; must iterate since fine structure lines are optically thick dielec kludge 0 ; turn off guesses of dielectronic recombination sphere black body, T=20,000K q(h) 49 hden = 2 radius = 18.477121 abund He-1 C-3.6576 N-4.39794 O-3.481146 ne-4.30103 mg-8 continue si-8 s-5.04576 ar-8 fe-8 plot continuum range .1 print faint .01 print last iteration print line sum :this is the sum of lines in table 2 of the Lexington meeting N 2 6584 N 2 6548 TOTL 3727 Ne 2 128 S 2 6720 S 3 187 S 3 334 S 3 9532 S 3 9069 end of lines assert line "TOTL" 4861 1 assert line "Q(H)" 4861 > 1. assert line "Q(H)" 4861 < 1.05 assert line "N 2" 6584 0.6765 assert line "TOTL" 3727 1.16 assert line "Ne 2" 128 0.266 assert line "S 2" 6720 0.455 assert line "S 3" 187 0.458 assert line "S 3" 334 0.655 assert line "S 3" 9532 0.451 assert line "Stoy" 0 4.54 assert ionization fraction helium 2 volume 0.019 assert nzone < 140 assert itrzn < 6 c coolhii.in