EDP Sciences
Free Access
Issue
A&A
Volume 496, Number 3, March IV 2009
Page(s) 841 - 853
Section Stellar atmospheres
DOI https://doi.org/10.1051/0004-6361/200809925
Published online 30 January 2009

Online Material

 \begin{figure}
\par\includegraphics[width=17cm,clip]{9925f1a.eps}\par\vspace*{2m...
...ps}\par\vspace*{2mm}
\includegraphics[width=17cm,clip]{9925f1d.eps}
\end{figure} Figure 1:

Comparison of the spectra for a subset of nitrogen rich and nitrogen normal LMC stars. The spectral region containing the N II 3995 Å line is expanded ( left panel) and the line is indicated. The spectral type, surface gravity, nitrogen abundance and projected rotational velocity of these stars are indicated in the panels. Other than the strength of the nitrogen lines there are no systematic differences between the spectra of stars of the same spectral type, surface gravity and projected rotational velocity.

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\begin{figure}
\par\includegraphics[width=17cm,clip]{9925f1e.eps}\par\vspace*{2m...
...ps}\par\vspace*{2mm}
\includegraphics[width=17cm,clip]{9925f1h.eps}
\end{figure} Figure 1:

continued.

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\begin{figure}
\par\includegraphics[width=17cm,clip]{9925f1i.eps}\par\vspace*{2m...
...ps}\par\vspace*{2mm}
\includegraphics[width=17cm,clip]{9925f1l.eps}
\end{figure} Figure 1:

continued.

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Table 1:   Equivalent width measurements and derived abundances for the metal lines observed in the spectra of our sample stars.

Table 2:   Atmospheric parameters, projected rotational velocities and chemical compositions of the sample.


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