A New Way to Resolve Cepheid Binaries
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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.
4 pages, 2 figures, to appear in "Radial and Nonradial Pulsations as Probes of Stellar Physics", IAU 185, eds. C. Aerts, T.R. Bedding and J. Christensen-Dalsgaard, ASP Conf. Ser. 259
4 pages, 2 figures, to appear in "Radial and Nonradial Pulsations as Probes of Stellar Physics", IAU 185, eds. C. Aerts, T.R. Bedding and J. Christensen-Dalsgaard, ASP Conf. Ser. 259