14 citations · 44 across the 10 of their papers we have counts for
10 papers
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…
ESPriF: the Echelle Spectropolarimeter of the BTA Primary Focus. Correction of Low-Frequency Variations in the Star Image
M. V. Yushkin, E. V. Emelianov, Yu. B. Verich +1
The development of a corrector for low-frequency variations in the star image at the input of ESPriF, the echelle spectropolarimeter of the BTA primary focus, is reported. New tech…
Instability in the system of the distant post-AGB star LS III+52 24 (IRAS 22023+5249)
V. G. Klochkova, A. S. Miroshnichenko, V. E. Panchuk +2
The optical spectra of the B-supergiant LS III+52 24 (IRAS 22023+5249) obtained at the 6-meter telescope BTA with a resolution R60000 in 2010-2021 revealed signs of wind varia…
Results of selected stellar spectroscopy programs at the 6-m telescope of SAO RAS performed with the NES echelle spectrograph
V. G. Klochkova, V. E. Panchuk, M. V. Yushkin
Over the past two decades the echelle spectrograph NES of the 6-m telescope was used to perform high resolution spectroscopy of far evolved stars spanning a wide range of initial m…
High-resolution optical spectroscopy of the post-AGB supergiant V340 Ser (=IRAS 172791119)
V. G. Klochkova, V. E. Panchuk, N. S. Tavolzhanskaya +1
Some evidences of wind variability and velocity stratification in the extended atmosphere has been found in the spectra of the supergiant V340 Ser (=IRAS 172791119) taken at the…
Hypergiant V1302 Aql in 2001-2014
Klochkova Valentina, Chentsov Eugene, Miroshnichenko Anatoly +2
We present the results of a study of spectral features and the velocity field in the atmosphere and the circumstellar envelope of the hypergiant V1302 Aql, the optical counterpart…