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<!-- DOI: 10.1051/0004-6361/200811561 -->

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

<p>
<div class="inset-old">
<table>
<tr><td><!-- init Label --><A NAME="hydrogen_21peg">&#160;</A><!-- end Label--><A NAME="1834"></A><A NAME="figure1481"
 HREF="img70.png"><IMG
 WIDTH="135" HEIGHT="99" SRC="Timg70.png"
 ALT="\begin{figure}
\par\includegraphics[width=12cm,clip]{11561fig8.ps}\end{figure}"></A><!-- HTML Figure number: 8 --></td>
<td class="img-txt"><span class="bold">Figure 8:</span><p>
Same as Fig.&nbsp;<a href="/articles/aa/full_html/2009/33/aa11561-08/aa11561-08.html#hydrogen_21peg_hbeta">2</a>, but also for H<IMG
 WIDTH="11" HEIGHT="26" ALIGN="MIDDLE" BORDER="0"
 SRC="img7.png"
 ALT="$\gamma $">
and
H<IMG
 WIDTH="11" HEIGHT="26" ALIGN="MIDDLE" BORDER="0"
 SRC="img8.png"
 ALT="$\alpha $">.</p></td>
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<tr><td><!-- init Label --><A NAME="hydrogen_hd145788">&#160;</A><!-- end Label--><A NAME="1835"></A><A NAME="figure1487"
 HREF="img71.png"><IMG
 WIDTH="135" HEIGHT="99" SRC="Timg71.png"
 ALT="\begin{figure}
\par\includegraphics[width=12cm,clip]{11561fig9.ps}\end{figure}"></A><!-- HTML Figure number: 9 --></td>
<td class="img-txt"><span class="bold">Figure 9:</span><p>
Same as Fig.&nbsp;<a href="/articles/aa/full_html/2009/33/aa11561-08/aa11561-08.html#hydrogen_21peg">8</a>, but for HD&nbsp;145788.</p></td>
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<tr><td><!-- init Label --><A NAME="hydrogen_hd17081">&#160;</A><!-- end Label--><A NAME="1836"></A><A NAME="figure1493"
 HREF="img72.png"><IMG
 WIDTH="135" HEIGHT="99" SRC="Timg72.png"
 ALT="\begin{figure}
\par\includegraphics[width=12cm,clip]{11561fig10.ps}\end{figure}"></A><!-- HTML Figure number: 10 --></td>
<td class="img-txt"><span class="bold">Figure 10:</span><p>
Same as Fig.&nbsp;<a href="/articles/aa/full_html/2009/33/aa11561-08/aa11561-08.html#hydrogen_21peg">8</a>, but for <IMG
 WIDTH="11" HEIGHT="26" ALIGN="MIDDLE" BORDER="0"
 SRC="img1.png"
 ALT="$\pi $">&nbsp;Cet.</p></td>
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<tr><td><!-- init Label --><A NAME="sph_hd145788">&#160;</A><!-- end Label--><A NAME="1837"></A><A NAME="figure1499"
 HREF="img73.png"><IMG
 WIDTH="135" HEIGHT="99" SRC="Timg73.png"
 ALT="\begin{figure}
\par\includegraphics[angle=90,width=12cm,clip]{11561fig11.ps}\end{figure}"></A><!-- HTML Figure number: 11 --></td>
<td class="img-txt"><span class="bold">Figure 11:</span><p>
Comparison between     LL<SMALL>MODELS</SMALL> theoretical fluxes calculated with the 
fundamental parameters and abundances derived for HD&nbsp;145788, taking into 
account a reddening of 
<!-- MATH: $E(B-V)=0.20$ -->
<I>E</I>(<I>B</I>-<I>V</I>)=0.20 (full black line) and without taking 
into account reddening (dashed black line), with IUE calibrated fluxes 
(full blue line), Johnson <I>UBV</I> photometry (green squares), Geneva photometry (red
circles) and 2MASS photmetry (violet triangles). The model fluxes were 
convolved to have approximately the same spectral resolution of the IUE fluxes 
(<I> R</I>&nbsp;<IMG
 WIDTH="13" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
 SRC="img5.png"
 ALT="$\sim $">&nbsp;900).</p></td>
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<tr><td><!-- init Label --><A NAME="Hefig">&#160;</A><!-- end Label--><A NAME="1838"></A><A NAME="figure1506"
 HREF="img74.png"><IMG
 WIDTH="135" HEIGHT="176" SRC="Timg74.png"
 ALT="\begin{figure}
\par\includegraphics[width=12cm,clip]{11561fig12.ps}\end{figure}"></A><!-- HTML Figure number: 12 --></td>
<td class="img-txt"><span class="bold">Figure 12:</span><p>
Comparison between the observed spectrum of the He  <SMALL>I</SMALL> 
line at 
<!-- MATH: $\lambda\sim4471$ -->
<IMG
 WIDTH="56" HEIGHT="26" ALIGN="MIDDLE" BORDER="0"
 SRC="img9.png"
 ALT="$\lambda \sim 4471$">&nbsp;&#197; for 21&nbsp;Peg (black thick line) and three 
synthetic profiles calculated with three different 
<!-- MATH: $T_{{\rm eff}}$ -->
<IMG
 WIDTH="23" HEIGHT="26" ALIGN="MIDDLE" BORDER="0"
 SRC="img3.png"
 ALT="$T_{{\rm eff}}$">
for the model 
atmosphere: 10&nbsp;200&nbsp;K (green line), the adopted 10&nbsp;400&nbsp;K (red line) and 
10&nbsp;600&nbsp;K (blue line).</p></td>
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<p>
<A NAME="comp_abn_21peg"></A><p class="inset-old"><a href="/articles/aa/full_html/2009/33/aa11561-08/table6.html"><span class="bold">Table 6:</span></a>&#160;&#160;
Comparison of the derived abundances with previous determinations for 21&nbsp;Peg.</p>
<p>
<A NAME="comp_abn_picet"></A><p class="inset-old"><a href="/articles/aa/full_html/2009/33/aa11561-08/table7.html"><span class="bold">Table 7:</span></a>&#160;&#160;
Comparison of the derived abundances with previous dterminations for <IMG
 WIDTH="11" HEIGHT="26" ALIGN="MIDDLE" BORDER="0"
 SRC="img1.png"
 ALT="$\pi $">&nbsp;Cet.</p>
<p>
<A NAME="Si2-gf"></A><p class="inset-old"><a href="/articles/aa/full_html/2009/33/aa11561-08/table8.html"><span class="bold">Table 8:</span></a>&#160;&#160;
A collection of the experimental and theoretical transition probabilities and Stark widths for the observed Si  <SMALL>II</SMALL> lines. Errors are given in parenthesis.</p><br>

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