Table 8:
Galactic (foreground) atomic column densities derived via
the construction of apparent column density velocity
profiles and subsequent line profile integration.
Error in log N is 0.02 dex for Na I, Ti II and Ca II K.
Adopted line transition wavelengths and oscillator strengths from Morton (2003).
Column densities toward Sk 191 and AzV 242 suffer significantly from line saturation. The smaller values for Ca II/Na I in the Galaxy are consistent with a higher UV in the SMC. Larger Galactic values for Ca II/Ti II by about 0.2 dex, indicate a higher sensitivity to the second
ionisation potential in the SMC compared to the Galaxy.
| |
Column density log N (cm-2) |
|
|
| |
Na I D1/D2 |
Ca II H/K |
Ti II |
Ca II/Na I |
Ca II/Ti II |
| AzV 456 |
11.97/11.86 |
12.13/12.17 |
11.98 |
0.24 |
0.17 |
| AzV 18 |
12.11/12.07 |
12.11/12.09 |
11.93 |
0.01 |
0.17 |
| AzV 214 |
12.35/12.23 |
12.20/12.21 |
12.13 |
-0.09 |
0.07 |
| AzV 398 |
12.06/11.86 |
12.29/12.30 |
12.14 |
0.34 |
0.16 |
| AzV 65 |
12.32/12.14 |
12.07/12.10 |
11.91 |
-0.24 |
0.17 |
| Sk 191 |
12.53/12.36 |
12.14/12.20 |
11.87 |
-0.3 |
0.30 |
| AzV 242 |
12.16/12.02 |
11.73/11.87 |
12.04 |
-0.29 |
-0.24 |
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