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<!-- DOI: 10.1051/0004-6361/200810651 -->

<h2 class="sec">Online Material</h2>

<p></p><p></p><h2 class="sec"><a name="SECTION000100000000000000000"></a><A NAME="sec:app"></A>
Appendix A:  Additional figures
</h2>

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<tr><td><!-- init Label --><A NAME="fig:pol-10"></A><!-- end Label--><A NAME="1240"></A><A NAME="figure1044" HREF="img98.png"><IMG SRC="Timg98.png" ALT="\begin{figure}
\includegraphics[width=10cm]{10651f28.eps}
\end{figure}" HEIGHT="102" WIDTH="103"></A><!-- HTML Figure number: 28 -->
</td>
<td class="img-txt"><span class="bold">Figure A.1:</span><p>
Spectropolarimetric data for SN&nbsp;2006X on day -10.
From top to bottom: total flux spectrum (in 10<sup>-15</sup> erg s<sup>-1</sup>cm<sup>-2</sup> &#xc5;<sup>-1</sup>), ISP corrected polarization degree, the Stokes
parameters <i>Q</i> and <i>U</i> and polarization position angle on the plane of
the sky.
</td>
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<tr><td><!-- init Label --><A NAME="fig:pol-8"></A><!-- end Label--><A NAME="1241"></A><A NAME="figure1053" HREF="img99.png"><IMG SRC="Timg99.png" ALT="\begin{figure}
\par\includegraphics[width=10cm]{10651f29.eps}
\end{figure}" HEIGHT="102" WIDTH="103"></A><!-- HTML Figure number: 29 -->
</td>
<td class="img-txt"><span class="bold">Figure A.2:</span><p>
Same as Fig.&nbsp;<a href="/articles/aa/full_html/2009/46/aa10651-08/aa10651-08.html#fig:pol-10">A.1</a> for day -8.
</td>
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<tr><td><!-- init Label --><A NAME="fig:pol-7"></A><!-- end Label--><A NAME="1242"></A><A NAME="figure1059" HREF="img100.png"><IMG SRC="Timg100.png" ALT="\begin{figure}
\par\includegraphics[width=10cm]{10651f30.eps}
\end{figure}" HEIGHT="102" WIDTH="103"></A><!-- HTML Figure number: 30 -->
</td>
<td class="img-txt"><span class="bold">Figure A.3:</span><p>
Same as Fig.&nbsp;<a href="/articles/aa/full_html/2009/46/aa10651-08/aa10651-08.html#fig:pol-10">A.1</a> for day -7.
</td>
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<tr><td><!-- init Label --><A NAME="fig:pol-6"></A><!-- end Label--><A NAME="1243"></A><A NAME="figure1065" HREF="img101.png"><IMG SRC="Timg101.png" ALT="\begin{figure}
\par\includegraphics[width=10cm]{10651f31.eps}
\end{figure}" HEIGHT="102" WIDTH="103"></A><!-- HTML Figure number: 31 -->
</td>
<td class="img-txt"><span class="bold">Figure A.4:</span><p>
Same as Fig.&nbsp;<a href="/articles/aa/full_html/2009/46/aa10651-08/aa10651-08.html#fig:pol-10">A.1</a> for day -6.
</td>
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<tr><td><!-- init Label --><A NAME="fig:pol-3"></A><!-- end Label--><A NAME="1244"></A><A NAME="figure1071" HREF="img102.png"><IMG SRC="Timg102.png" ALT="\begin{figure}
\par\includegraphics[width=10cm]{10651f32.eps}
\end{figure}" HEIGHT="102" WIDTH="103"></A><!-- HTML Figure number: 32 -->
</td>
<td class="img-txt"><span class="bold">Figure A.5:</span><p>
Same as Fig.&nbsp;<a href="/articles/aa/full_html/2009/46/aa10651-08/aa10651-08.html#fig:pol-10">A.1</a> for day -3.
</td>
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<tr><td><!-- init Label --><A NAME="fig:pol-2"></A><!-- end Label--><A NAME="1245"></A><A NAME="figure1077" HREF="img103.png"><IMG SRC="Timg103.png" ALT="\begin{figure}
\par\includegraphics[width=10cm]{10651f33.eps}
\end{figure}" HEIGHT="102" WIDTH="103"></A><!-- HTML Figure number: 33 -->
</td>
<td class="img-txt"><span class="bold">Figure A.6:</span><p>
Same as Fig.&nbsp;<a href="/articles/aa/full_html/2009/46/aa10651-08/aa10651-08.html#fig:pol-10">A.1</a> for day -2.
</td>
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<tr><td><!-- init Label --><A NAME="fig:pol-1"></A><!-- end Label--><A NAME="1246"></A><A NAME="figure1083" HREF="img104.png"><IMG SRC="Timg104.png" ALT="\begin{figure}
\par\includegraphics[width=10cm]{10651f34.eps}
\end{figure}" HEIGHT="102" WIDTH="103"></A><!-- HTML Figure number: 34 -->
</td>
<td class="img-txt"><span class="bold">Figure A.7:</span><p>
Same as Fig.&nbsp;<a href="/articles/aa/full_html/2009/46/aa10651-08/aa10651-08.html#fig:pol-10">A.1</a> for day -1.
</td>
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<tr><td><!-- init Label --><A NAME="fig:pol+39"></A><!-- end Label--><A NAME="1247"></A><A NAME="figure1089" HREF="img105.png"><IMG SRC="Timg105.png" ALT="\begin{figure}
\par\includegraphics[width=10cm]{10651f35.eps}
\end{figure}" HEIGHT="102" WIDTH="103"></A><!-- HTML Figure number: 35 -->
</td>
<td class="img-txt"><span class="bold">Figure A.8:</span><p>
Same as Fig.&nbsp;<a href="/articles/aa/full_html/2009/46/aa10651-08/aa10651-08.html#fig:pol-10">A.1</a> for day +39.
</td>
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<tr><td><!-- init Label --><A NAME="fig:polm7"></A><!-- end Label--><A NAME="1248"></A><A NAME="figure1095" HREF="img106.png"><IMG SRC="Timg106.png" ALT="\begin{figure}
\par\includegraphics[width=10cm]{10651f36.eps}
\end{figure}" HEIGHT="102" WIDTH="105"></A><!-- HTML Figure number: 36 -->
</td>
<td class="img-txt"><span class="bold">Figure A.9:</span><p>
Spectropolarimetry of SN&nbsp;2006X on day -7.
Main line identifications are given in the upper panel. The red
histogram traces the polarization along the dominant axys.  Vertical
dashed lines correspond to an expansion velocity of 19,000 km
s<sup>-1</sup>, while the dotted lines correspond to 14,000 km s<sup>-1</sup>.
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<tr><td><!-- init Label --><A NAME="fig:polm3"></A><!-- end Label--><A NAME="1249"></A><A NAME="figure1102" HREF="img107.png"><IMG SRC="Timg107.png" ALT="\begin{figure}
\par\includegraphics[width=10cm]{10651f37.eps}
\end{figure}" HEIGHT="102" WIDTH="105"></A><!-- HTML Figure number: 37 -->
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<td class="img-txt"><span class="bold">Figure A.10:</span><p>
Same as Fig.&nbsp;<a href="/articles/aa/full_html/2009/46/aa10651-08/aa10651-08.html#fig:polm7">A.9</a> for day -3. 
Vertical dashed lines correspond to a expansion velocity of 17,000
km s<sup>-1</sup>, while the dotted lines correspond to 12,000 km s<sup>-1</sup>.
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<tr><td><!-- init Label --><A NAME="fig:polm1"></A><!-- end Label--><A NAME="1250"></A><A NAME="figure1110" HREF="img108.png"><IMG SRC="Timg108.png" ALT="\begin{figure}
\par\includegraphics[width=10cm]{10651f38.eps}
\end{figure}" HEIGHT="102" WIDTH="107"></A><!-- HTML Figure number: 38 -->
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<td class="img-txt"><span class="bold">Figure A.11:</span><p>
Same as Fig.&nbsp;<a href="/articles/aa/full_html/2009/46/aa10651-08/aa10651-08.html#fig:polm7">A.9</a> for day -1. 
Vertical dashed lines correspond to an expansion velocity of 16,000
km s<sup>-1</sup>, while the dotted lines correspond to 11,000 km s<sup>-1</sup>.
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<tr><td><!-- init Label --><A NAME="fig:polp39"></A><!-- end Label--><A NAME="1251"></A><A NAME="figure1118" HREF="img109.png"><IMG SRC="Timg109.png" ALT="\begin{figure}
\par\includegraphics[width=10cm]{10651f39.eps}
\end{figure}" HEIGHT="102" WIDTH="105"></A><!-- HTML Figure number: 39 -->
</td>
<td class="img-txt"><span class="bold">Figure A.12:</span><p>
Same as Fig.&nbsp;<a href="/articles/aa/full_html/2009/46/aa10651-08/aa10651-08.html#fig:polm7">A.9</a> for day +39. 
Vertical dotted lines correspond to a expansion velocity of 13,000
km s<sup>-1</sup>.
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