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Substantial Disc Loss in the Be/X-ray Binary System A0535+26

Published online by Cambridge University Press:  12 April 2016

N.J. Haigh ,
M.J. Coe ,
I.A. Steele  and
J. Fabregat
N.J. Haigh
Affiliation:
Department of Physics and Astronomy, The University, Southampton, son IBJ, UK
M.J. Coe
Affiliation:
Department of Physics and Astronomy, The University, Southampton, S0171BJ, UK
I.A. Steele
Affiliation:
Astrophysics Reseearch Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead, CH41 1LD, UK
J. Fabregat
Affiliation:
Departamento de Astronomia y Astrofisica, Universidad de Valencia, E-4-6100 Burjassot, Valencia, Spain

Abstract

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Infrared JHK photometry from October 1998 revealed a remarkable change in the Be/X-ray binary system A0535+26, manifesting itself as a dramatic reduction in emission from the circumstellar disc. Optical and IR spectra presented here have confirmed this disc-loss in greater detail showing radically reduced Hydrogen and Helium line emission, to a degree never before seen in this system, and only rarely in a handful of Be/X-ray binaries. Optical spectroscopy has revealed the re-appearance of a small, stable inner disc, and IR spectra/photometry show the eventual regrowth of a robust circumstellar disc resembling the pre-disc-loss state.

Type
7. Interacting Binaries
Information
International Astronomical Union Colloquium , Volume 175: The Be Phenomenon in Early-Type Stars , 2000 , pp. 735 - 738
Copyright
Copyright © Astronomical Society of the Pacific 2000

References

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