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Binary and multiple magnetic Ap/Bp stars

Published online by Cambridge University Press:  07 August 2014

Denis Rastegaev ,
Yuri Balega ,
Vladimir Dyachenko ,
Alexander Maksimov  and
Evgenij Malogolovets
Denis Rastegaev
Affiliation:
Special Astrophysical Observatory, Nizhnij Arkhyz, Zelenchukskiy region, Karachai-Cherkessian Republic, Russia369167 email: [email protected]
Yuri Balega
Affiliation:
Special Astrophysical Observatory, Nizhnij Arkhyz, Zelenchukskiy region, Karachai-Cherkessian Republic, Russia369167 email: [email protected]
Vladimir Dyachenko
Affiliation:
Special Astrophysical Observatory, Nizhnij Arkhyz, Zelenchukskiy region, Karachai-Cherkessian Republic, Russia369167 email: [email protected]
Alexander Maksimov
Affiliation:
Special Astrophysical Observatory, Nizhnij Arkhyz, Zelenchukskiy region, Karachai-Cherkessian Republic, Russia369167 email: [email protected]
Evgenij Malogolovets
Affiliation:
Special Astrophysical Observatory, Nizhnij Arkhyz, Zelenchukskiy region, Karachai-Cherkessian Republic, Russia369167 email: [email protected]
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Abstract

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We present the results of speckle interferometric observations of 273 magnetic stars most of which are Ap/Bp type. All observations were made at the 6-m telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences. We resolved 58 binary and 5 triple stars into individual components. Almost half of these stars were astrometrically resolved for the first time. The fraction of speckle interferometric binaries/multiples in the sample of stars with confirmed magnetic fields is 23%. We expect that the total fraction of binaries/multiples in the sample with account for spectroscopic short-period systems and wide common proper motion pairs can be twice higher. The detected speckle components have a prominent peak in the ρ distribution that corresponds to the closest resolved pairs. Full version of present paper is available in electronic form at http://arxiv.org/abs/1308.3168.

Keywords

magnetic starsbinary and multiple starsspeckle interferometry
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S302: Magnetic Fields throughout Stellar Evolution , August 2013 , pp. 317 - 319
Copyright
Copyright © International Astronomical Union 2014 

References

Balega, Y. Y., Dyachenko, V. V., Maksimov, A. F., Malogolovets, E. V., Rastegaev D. A. & Romanyuk, I. I. 2012, AstBu, 67, 44Google Scholar
Maksimov, A. F., Balega, Y. Y., Dyachenko, V. V., Malogolovets, E. V., Rastegaev, D. A. & Semernikov, E. A. 2009, AstBu, 64, 296Google Scholar
Rastegaev, D. A., Balega, Y. Y., Dyachenko, V. V., Maksimov, A. F. & Malogolovets, E. V. 2013, arXiv, arXiv:1308.3168Google Scholar
Romanyuk, I. I. & Kudryavtsev, D. O. 2008, AstBu, 63, 139Google Scholar