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A New Way to Resolve Cepheid Binaries

Nancy Remage Evans, Derck Massa

astro-pharXiv:astro-ph/0203515

Abstract

We have measured the centroid shift of low resolution HST FOC spectra as the dominant star changes from the Cepheid to the hot companion. With this approach we have resolved the AW Per system and marginally resolved the U Aql system.

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