Online Material
![\begin{figure}
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Figure 2:
Spectra of C/2006 W3 (Christensen) obtained with PACS on
November 8, 2009 (central pixel pointed on the comet nucleus). The
pixel size is
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| Open with DEXTER | |
.
The wavelengths of
water lines are indicated by vertical dashed lines.
![\begin{figure}
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\end{figure}](img106.png)
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Figure 5: Spectra of C/2006 W3 (Christensen) observed with the IRAM 30-m telescope. |
| Open with DEXTER | |
![\begin{figure}
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\end{figure}](img107.png)
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Figure 6: Comparison of measured abundances relative to HCN in comets C/2006 W3 (Christensen) and C/1995 O1 (Hale-Bopp) at 3.3 AU from the Sun. |
| Open with DEXTER | |