1972•Publications of the Astronomical Society of the PacificOpen access

On the Wolf-Rayet Stars HD 90657 and HD 117688

Virpi Sinikka Niemelä

Abstract

Recent Spectrographic observations of HD 90657 and HD 117688 do not confirm their earlier classification as W-R objects that are intermediate to those that belong to the WN and WC sequences. HD 90657 is very probably a spectroscopic binary with a period of a few days. Key words: Wolf-Rayet stars - spectral observations

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Key concepts: Wolf–Rayet star, Astrophysics, Stars, Physics, Stellar classification, Astronomy, K-type main-sequence star, Binary star