Input for ATMOS

ABU.DAT

Start of file
MAI Number of elements in mix Format I7
Next MAI lines:
NAMI(I) WTI(I) ABUI(I)
Element code e.g., Fe I: 2600 Atomic weight (12C=12) logarithmic abundance; usually normalized to H=12 but may be based on anything.
Format I7 Format F9.4 Format F7.3

All elements known to ATMOS must be listed, additional ones can be given but are included only in the mean molecular weight. Currently, the minimum list is (example for solar mixture):

     41
    100   1.0080 12.000
    200   4.0026 11.000
    300   6.9410  1.000
    400   9.0122  1.150
    500  10.8110  2.600
    600  12.0111  8.670
    700  14.0067  7.990
    800  15.9994  8.920
   1000  20.1790  7.730
   1100  22.9898  6.280
   1200  24.3050  7.530
   1300  26.9815  6.430
   1400  28.0860  7.500
   1500  30.9738  5.350
   1600  32.0600  7.200
   1800  39.9480  6.830
   1900  39.1020  5.050
   2000  40.0800  6.360
   2100  44.9560  2.990
   2200  47.9000  4.880
   2300  50.9414  3.910
   2400  51.9960  5.610
   2500  54.9380  5.470
   2600  55.8470  7.460
   2700  58.9332  4.850
   2800  58.7100  6.180
   2900  63.5460  4.240
   3000  65.3700  4.600
   3700  85.4700  2.400
   3800  87.6200  2.930
   3900  88.9059  2.180
   4000  91.2200  2.460
   5600 137.3400  2.180
   5700 138.9060  1.070
   5800 140.1200  1.580
   6000 144.2400  1.400
   6200 150.4000  0.880
   6300 151.9600  0.480
   7400 183.8500  0.980
   7600 190.2000  1.340
   9000 232.0380  0.160
A simple program ABUSCAL exists to create and scale such files for any mixture.