Instabilities of the kinematic state of the atmospheres of some single C-rich post-AGB stars

Valentina G. Klochkova, Vladimir E. Panchuk, Nonna S. Tavolzhanskaya +1

To search for and study the instabilities in the atmospheres of selected post-AGB stars, we have performed a long-term high-resolution spectroscopy (R=60000) with the spectrograph…