Modelling planet-forming circumstellar discs - Herschel
Modelling planet-forming circumstellar discs - Herschel
Modelling planet-forming circumstellar discs - Herschel
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τ<br />
cumulative F line [%]<br />
z/r<br />
10 -1<br />
10 0<br />
10 1<br />
10 2<br />
10 3<br />
10 4<br />
10 5<br />
100<br />
80<br />
60<br />
40<br />
20<br />
0<br />
0.6<br />
0.5<br />
0.4<br />
0.3<br />
0.2<br />
Where do the emission lines come from?<br />
12 CO J=3 → 2 (867µm)<br />
τ cont<br />
τ line<br />
F line = 1.66E-19 W/m 2<br />
-4 -2 0 2 4 6 8 10<br />
log n CO [cm -3 ]<br />
CO 866.96µm<br />
0.1<br />
0.0<br />
0.1 1.0 10.0<br />
r [AU]<br />
100.0<br />
τ<br />
10000.0<br />
1000.0<br />
100.0<br />
10.0<br />
1.0<br />
0.1<br />
100<br />
cumulative F line [%]<br />
z/r<br />
80<br />
60<br />
40<br />
20<br />
0<br />
0.6<br />
0.5<br />
0.4<br />
0.3<br />
0.2<br />
12 CO J=18 → 17 (145µm)<br />
τ cont<br />
τ line<br />
F line = 6.60E-20 W/m 2<br />
-4 -2 0 2 4 6 8 10<br />
log n CO [cm -3 ]<br />
CO 144.78µm<br />
0.1<br />
0.0<br />
0.1 1.0 10.0<br />
r [AU]<br />
100.0<br />
• optically thick • still optically thick<br />
• continuum is optically thin • in front of optically thick dust<br />
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