... supergiants

The INT is operated in the island of La Palma by the ING in the Spanish Observatorio de El Roque de los Muchachos of the Instituto de Astrofísica de Canarias.

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... and HD 93 129A

Note added in proofs: Walborn (2002, Proc. IAU Symp. 212) reports that HD 93 129A is a binary.

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