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Tomographic Separation of Composite Spectra of O-Type Stars
Published online by Cambridge University Press: 12 April 2016
Abstract
We have analyzed UV photospheric lines of three O-type binaries (AO Cas, Plaskett’s Star, and 29 UW CMa) by means of tomographic and cross-correlation analyses, with the goal of estimating the physical properties of the individual stars. The tomographic techniques allowed us to estimate Teff and log g the luminosity ratio, and rotational velocities. The mass ratios were obtained from a cross-correlation technique, applied to spectral regions in which preliminary tomography shows the secondary has strong photospheric line features.
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- Spectroscopic Studies
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- Copyright © Astronomical Society of the Pacific 1992