Irradiation of the secondary star in X-ray Nova Scorpii 1994 (=GRO J1655-40)
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 1996 June, 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 …