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Discovery of the secondary star of the HgMn binary kappa Cancri

T. Ryabchikova·O. Kotchoukhov·G. Galazutdinov·F. Musaev·S. J. Adelman
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Abstract

A careful investigation of a CCD spectrum of the SB1 system kappa Cnc in the spectral region 3800 A - 8000 A resulted in the discovery of the lines of the secondary star. We then analyzed several short-wavelength range Reticon spectra obtained at different orbital phases to find additional radial velocities. The mass ratio is m_A/m_B = 2.2 +- 0.1 and, from binary spectrum-synthesis, the ratio of radii is R_A/R_B >= 2.

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T. Ryabchikova, O. Kotchoukhov, G. Galazutdinov, F. Musaev, S. J. Adelman. 1998-05-12. Discovery of the secondary star of the HgMn binary kappa Cancri. https://arxiv.org/abs/astro-ph/9805143

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