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A new analysis of the B-type stars in Ori OB1 (Simón-Díaz 2010)<br />

Comparison with results from CL94: O and Si abundances<br />

1) Important discrepancies in the derived stellar parameters<br />

2) O and Si abundances are more homogeneous than previously<br />

estimated !!<br />

3) Dispersion of abundances is smaller than intrinsic uncertainties<br />

1<br />

11<br />

4

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