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Spectroscopic CCD Search for the Unseen Companions in Three Single-Line WNL Binaries
Published online by Cambridge University Press: 03 August 2017
Extract
We have obtained some 15 CCD spectra at different orbital phases for each of the SBl systems HD193928 (WN6), HD197406 (WN7), and CQ Cep (WN7), in an attempt to detect the companion, determine its orbit and estimate the masses. The wavelength range of the spectra is λλ3600 - 4200Å, with 1.4Å/pixel and < S/N > ≈ 100/pixel. We compare the best emission-line (N IV λ4058Å) with the best absorption-line (H9 λ3835Å).
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- Session IV. Binaries
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- Copyright © Kluwer 1991
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