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Orion OB1: B-type stars vs nebular (M42) abundances<br />

Elem.<br />

O<br />

O (g+d)<br />

C<br />

N<br />

Ne<br />

S<br />

Ar<br />

B-type stars<br />

(OriOB1)<br />

8.74 ± 0.04 †<br />

8.35 ± 0.03 †<br />

7.82 ± 0.07 †<br />

8.09 ± 0.05 †<br />

7.15 ± 0.05 ††<br />

6.66 ± 0.06 †††<br />

CEL<br />

8.51 ± 0.03<br />

8.64 – 8.67<br />

---<br />

7.65 ± 0.09<br />

7.78 ± 0.07<br />

7.06 ± 0.04<br />

6.50 ± 0.05<br />

M42 (E02)<br />

† Simón-Díaz (2010) + Nieva & Simón-Díaz (2011)<br />

†† Daflon et al. (2009)<br />

††† Lanz et al. (2008)<br />

8.42 ± 0.02<br />

8.16 ± 0.2<br />

7.92 ± 0.09 (b)<br />

6.87 ± 0.05 (b)<br />

(a) Classical icf<br />

(b) icf own model<br />

E02: Esteban et al. (2002)<br />

S-DS11: Simón-Díaz & Stasinska (2011) Rubin et al. (2010): IR[NeII] + IR[NeIII] = 8.01 ± 0.01 dex<br />

ORL<br />

8.63 ± 0.03<br />

8.72 – 8.77<br />

---<br />

---<br />

---<br />

CEL<br />

8.52 ± 0.01<br />

8.65 - 8.68<br />

---<br />

7.68 ± 0.10 (a)<br />

7.84 ± 0.03 (a)<br />

8.05 ± 0.03 (b)<br />

6.39 ± 0.03 (b)<br />

M42 (S-DS11)<br />

ORL<br />

8.65 ± 0.03<br />

8.74 – 8.79<br />

8.37 ± 0.03<br />

---<br />

8.03 ± 0.26 (a)<br />

8.25 ± 0.35 (b)<br />

---<br />

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