WC stellar win turbulent outflows feeding the ISM

摘要

Wind fluctuations in [WC 8-9]-type central stars of planetary nebulae have been detected. Moving features seen on the top of the C III λ5696 and C IV λλ5801/12 emission lines of HD 826 (NGC 40) and BD +30°3639 are interpreted as outflowing clumps which are radially accelerated in the Wolf-Rayet winds. Kinematic parameters of the blobs were derived and compared to those observed for massive Wolf-Rayet stars.