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Doppler Tomography in 2D and 3D of the X-ray Binary Cyg X-1 for June 2007

Published online by Cambridge University Press:  23 April 2012

O. I. Sharova ,
M. I. Agafonov ,
E. A. Karitskaya ,
N. G. Bochkarev ,
S. V. Zharikov ,
G. Z. Butenko  and
A. V. Bondar
O. I. Sharova
Affiliation:
Radiophysical Research Institute, B.Pecherskaya str, 25/12a, Nizhny Novgorod 603950Russia
M. I. Agafonov
Affiliation:
Radiophysical Research Institute, B.Pecherskaya str, 25/12a, Nizhny Novgorod 603950Russia
E. A. Karitskaya
Affiliation:
Institute of Astronomy RAS, Moscow 119017Russia
N. G. Bochkarev
Affiliation:
Sternberg Astronomical Institute 13 Universitetskij pr., Moscow 119991Russia
S. V. Zharikov
Affiliation:
Mexican National Astronomical Observatory, Institute of Astronomy, UNAM, Mexico
G. Z. Butenko
Affiliation:
International Center for Astronomical, Medical and Ecological Research, Terscol, Kabarda-Balkarian Republic, 361605Russia
A. V. Bondar
Affiliation:
International Center for Astronomical, Medical and Ecological Research, Terscol, Kabarda-Balkarian Republic, 361605Russia
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Abstract

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The 2D and 3D Doppler tomograms of X-ray binary system Cyg X-1 (V1357 Cyg) were reconstructed from spectral data for the line HeII 4686Å obtained with 2-m telescope of the Peak Terskol Observatory (Russia) and 2.1-m telescope of the Mexican National Observatory in June, 2007. Information about gas motions outside the orbital plane, using all of the three velocity components Vx, Vy, Vz, was obtained for the first time. The tomographic reconstruction was carried out for the system inclination angle of 45°. The equal resolution (50 × 50 × 50 km/s) is realized in this case, in the orbital plane (Vx, Vy) and also in the perpendicular direction Vz. The checkout tomograms were realized also for the inclination angle of 40° because of the angle uncertainty. Two versions of the result showed no qualitative discrepancy. Details of the structures revealed by the 3D Doppler tomogram were analyzed.

Keywords

Accretionaccretion disks – binaries: x-ray – binaries: imaging – stars: individual (Cyg X-1) – techniques: image processing
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S282: From Interacting Binaries to Exoplanets: Essential Modeling Tools , July 2011 , pp. 201 - 202
Copyright
Copyright © International Astronomical Union 2012

References

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Agafonov, M. I. & Sharova, O. I. 2005b, AN, 326, 143Google Scholar
Karitskaya, E. A., Agafonov, M. I., Bochkarev, N. G. et al. , 2005, A&A Trans., 24, 383Google Scholar
Karitskaya, E. A., Agafonov, M. I., Bochkarev, N. G. et al. , 2007, A&A Trans., 26, 159Google Scholar