Time-series Spectroscopy of Pulsating sdB stars III: Line Indices of PG1605+072

S. J. O'Toole, M. A. S. G. Joergensen, H. Kjeldsen +3

We present the detection and analysis of line index variations in the pulsating sdB star PG 1605+072. We have found a strong dependence of line index amplitude on Balmer line order…