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Tomographic Separation of Composite Spectra of O-Type Stars

Published online by Cambridge University Press:  12 April 2016

W.G. Bagnuolo  and
D.R. Gies
W.G. Bagnuolo
Affiliation:
CHARA, Georgia State University, Atlanta, GA 30303, USA
D.R. Gies
Affiliation:
CHARA, Georgia State University, Atlanta, GA 30303, USA

Abstract

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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.

Type
Spectroscopic Studies
Information
International Astronomical Union Colloquium , Volume 135: Complementary Approaches to Double and Multiple Star Research , 1992 , pp. 140 - 142
Copyright
Copyright © Astronomical Society of the Pacific 1992

References

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