|
4.d.v. Optical parameters of dust
|
Table 5 shows the band width and optical parameters of dust used in
this study.
For a band width of 5-11.6 μm, infrared dust opacity
is obtained by visible dust opacity calculated by using
and the visible to infrared opacity ratio,
which is set to 2 (Forget, 1998).
For a band width of 20-200 μm, infrared dust opacity is calculated by using
 and the value of
shown in Table 5.
Because the visible to infrared opacity ratios , which were calculated
by using the extinction efficiency, do not agree well with the
observation results (Zurek,1982),
infrared dust opacity is derived by the way mentioned above.
The disagreement results from that the properties of small radius dust
whose extinction effect in visible wavelength is larger than that in
infrared are not revealed (Zurek,
1982; Forget ,1998).
Table 5:
Band width and optical parameters of dust.
Note  .
| |
band (μm) |
band (cm-2) |
|
 |
 |
| Visible |
0.1-5 &mulm |
2000-105 |
1.0 |
0.920 |
0.55 |
| Infrared 1 |
5-11.6 μm |
870-2000 |
0.253 |
0.470 |
0.528 |
| Infraerd 2 |
20-200 μm |
50-500 |
0.166 |
0.370 |
0.362 |
|
|
