Online Material
![\begin{figure}
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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}
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Figure 1: continued. |
| Open with DEXTER | |
![\begin{figure}
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Figure 1: continued. |
| Open with DEXTER | |
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.