Morel, T; Marchenko, S. V; Pati, A. K; Kuppuswamy, K; Carini, M. T
(Astronomical Society of India, 2003)
We present preliminary results of a long-term spectroscopic monitoring of a sample of bright OB-supergiants aimed at establishing the incidence of co-rotating, large-scale wind structures by detecting rotationally modulated ...