... revisited

Based on observations collected at the Observatoire de Haute Provence (France) and the Observatorio Astronómico Nacional of San Pedro Mártir (Mexico).

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...1,

Directeur de Recherches FNRS (Belgium).

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... temperature

Defined, as is usual for an extended atmosphere, as the effective temperature corresponding to the radius at a Rosseland optical depth of 20.

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... luminosity

We caution that our fit does not account for any intrinsic - i.e. circumstellar wind - absorption.

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