The spectral variations of the O-type runaway supergiant HD 188209
We report spectral time series of the late O-type runaway supergiant HD 188209. Radial velocity variations of photospheric absorption lines with a possible quasi-period of ~6.4d have been detected in high-resolution echelle spectra. Night-to-night variations in the position and strength of the central emission reversal of the Hα profile occurring
Israelian, G. et al.
Fecha de publicación:
8
2000