Irradiation of the secondary star in X-ray Nova Scorpii 1994 (=GRO J1655-40)
We have obtained intermediate resolution optical spectra of the black-hole candidate Nova Sco 1994 in June 1996, when the source was in an X-ray/optical active state (R~15.05). We measure the radial velocity curve of the secondary star and obtain a semi-amplitude of 279+/-10 km s-1 a value which is 30 per cent larger than the value obtained when
Shahbaz, T. et al.
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2001