Infrared spectroscopy of Be/X-ray binaries

Everall, C.; Coe, M. J.; Roche, P.; Norton, A. J. and Unger, S. J. (1994). Infrared spectroscopy of Be/X-ray binaries. In: Pulsation, Rotation and Mass Loss in Early-Type Stars, International Astronomical Union, Springer Netherlands, pp. 204–205.




We present infrared spectra of 4 Be/X-ray binaries in the K band, and 4 spectra in the J, H and K bands of 2 more sources. The HI IR emission lines are useful determinators of the conditions in the inner regions of the circumstellar disk about the Be star, due to optical depth effects. These are preliminary results, and hope to be followed up by high resolution echelle spectra, where we wish to estimate the velocity field, temperature and density structure of the circumstellar material.

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