[mmaimcal] at yet higher z...

[Harvey Liszt]

Bryan asked for analogous numbers at higher z than I had furnished.
For the hotter models (b) and (c), things pretty much continue on 
as expected at least for a while, but for model (a) of the dark
cloud, the cmb begins to have effects which are somewhat stronger 
and related to cloud physics (as opposed to simple radiative 
transfer) and which I did not expect.

As 2.735*(1+z) rises to the  T_kin which the material would like
to have at z = 0, the cloud thermodynamics have to change! And so
it is for all the models here.  Eventually, at some z, the models
get much hotter than they would have been at z = 0 and the CO
lines get brighter. 

My dark cloud models get much hotter at larger z and the CO lines 
get stronger.  For instance, the cloud whose T_kin varies between
25 K at the edge and 9 K inside is at 50-60 K at z = 10. Dark clouds 
aren't really cold at high redshift.  Even models (b) and (c) are 
affected at z = 10.  At z = 15, my dark cloud wanted to be at 300K,
owing partly to runaway heating from H_2 formation (which varies
as sqrt(T_kin).

Is this real?  Within the context of my models, yes.  Do the models
describe a MW at high z?  That's research and we're doing politics.

regards, Harvey

				T_B
z    1-0     2-1      3-2    4-3      5-4    6-5     7-6     8-7	
model (a) A_V=5, n_H2 = 1280
6   2.643   2.500   2.077   1.332   0.552   0.152   0.042   0.007
7   3.689   3.496   2.938   2.005   0.962   0.323   0.092   0.021
8   6.479   6.141   5.239   3.776   2.077   0.844   0.262   0.073
9  12.006  11.245   9.733   7.449   4.639   2.266   0.801   0.270
10 19.759  18.034  15.506  14.006   9.555   5.588   1.984   0.739

model (b) A_V=1.25, n_H2 = 1280
6  8.351   8.840   6.611   3.824   1.616   0.532   0.128   0.023
7  7.751   8.356   6.372   3.846   1.757   0.632   0.167   0.035
8  7.513  10.537   8.815   6.081   3.220   1.204   0.267   0.054
9  8.123  11.912  10.296   7.929   4.564   1.994   0.449   0.102
10 8.903  13.717  12.398   9.857   6.016   2.823   0.731   0.187

model (c) G0 = 250 A_V=4, N_H2 = 128,000
6  17.617  24.541  24.404  23.898  23.170  22.237  20.726  17.841
7  16.393  22.953  22.861  22.450  21.857  21.075  19.747  17.240
8  15.292  21.525  21.490  21.140  20.646  19.992  18.811  16.650
9  14.386  20.374  20.369  20.093  19.664  19.112  18.046  16.195
10 13.741  19.604  19.630  19.404  19.018  18.561  17.570  15.985
15 14.873  22.707  22.961  22.923  22.597  22.307  21.306  20.456