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Some Developments of the Weak Stellar Magnetic Field Determination Method for the Example of Cygnus X-1

Published online by Cambridge University Press:  23 April 2012

N. G. Bochkarev  and
E. A. Karitskaya
N. G. Bochkarev
Affiliation:
Sternberg Astron. Inst., Universitetskij prosp. 13, 119991 Moscow, Russia email: boch@sai.msu.ru
E. A. Karitskaya
Affiliation:
Astronomical Institute of RAS, Pyatnitskaya str. 48, 119017 Moscow, Russia email: karitsk@sai.msu.ru
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Abstract

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Some developments of measurements of the weak stellar magnetic fields by the least square technique applied to spectropolarimetric data are proposed and used for the X-ray binary Cyg X-1 = HDE 226868 (the optical counterpart is an O 9.7 supergiant).

Keywords

Stars: magnetic fieldstechniques: polarimetrictechniques: spectroscopicmethods: statisticalstars: early-typestars: individual (Cyg X-1 = HDE 226868 = V1357 Cyg)(stars:) supergiants(ISM:) extinctionX-rays: binariesblack hole physics
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. 75 - 76
Copyright
Copyright © International Astronomical Union 2012

References

Bochkarev, N. G. & Karitskaya, E. A. 2011, in Kudryavtsev, D. O., & Romanyuk, I. I. (eds.), Magnetic Stars (N.Arkhyz: SAO RAS publ.), p. 199Google Scholar
Hubrig, S., Szeifert, T., Schöller, M. et al. , 2004, A&A, 415, 685Google Scholar
Karitskaya, E. A., Bochkarev, N. G., Hubrig, S. et al. , 2009, astro-ph 0908.2719Google Scholar
Karitskaya, E. A., Bochkarev, N. G., Hubrig, S. et al. , 2010, Inf. Bull. Variable Stars, 5950, 1Google Scholar
Landstreet, J. D. 1982, ApJ, 258, 639Google Scholar