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LHG 83: Another outstanding X-ray binary in the LMC

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Abstract

The strongest X-ray point source, LHG 83, discovered in the EINSTEIN survey of the LMC and not being associated with a nearby coronal type stellar emitter or background AGN is identified with a faint blue variable object. Spectrophotometry reveals low mass X-ray binary characteristics at a mean velocity consistent with LMC membership. The He II λ4686 emission exhibits a unique blue shifted component suggesting outflow velocities of several thousand km/s. Optical brightness changes by 0.3 mag in less than one hour are likely to be intrinsic to the source rather than induced by orbital motion. The low X-ray to optical flux ratio is probably due to the fact that the central X-ray source is blocked from direct view by the accretion disk.

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Authors and Affiliations

  1. Institut für Astronomie und Astrophysik, TU Berlin, G.D.R.

    M. W. Pakull

  2. Observatoire de Besancon, France

    S. A. Ilovaisky & C. Chevalier

Authors
  1. M. W. Pakull
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  2. S. A. Ilovaisky
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  3. C. Chevalier
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Based on observations obtained at ESO, La Silla, Chile

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Pakull, M.W., Ilovaisky, S.A. & Chevalier, C. LHG 83: Another outstanding X-ray binary in the LMC. Space Sci Rev 40, 229–232 (1985). https://doi.org/10.1007/BF00212890

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  • DOI: https://doi.org/10.1007/BF00212890

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