Optical studies of the X-ray transient XTE J2123-058 - II. Phase-resolved spectroscopy
Optical studies of the X-ray transient XTE J2123-058 - II. Phase-resolved spectroscopy
We present time-resolved spectroscopy of the soft X-ray transient XTE J2123–058 in outburst. A useful spectral coverage of 3700–6700 Å was achieved spanning two orbits of the binary, with single-epoch coverage extending to ∼9000 Å. The optical spectrum approximates a steep blue power law, consistent with emission on the Rayleigh–Jeans …