6 papers
OPTIMus - a survey of massive star-forming regions at OPTical, Infrared, and Millimeter wavelengths
M. S. Kirsanova, A. V. Moiseev, A. M. Tatarnikov +3
This work presents a description of the scientific goals and objectives of OPTIMus (OPTical, Infrared, Millimeter survey of massive star-forming regions), a survey of massive star-…
Noctilucent Clouds Modulated by Strong 5-day Planetary Wave in 2025: Amplitudes, Phases and Altitudes Based on Ground-Based Observations and Satellite Temperature Data
Oleg S. Ugolnikov, Ilya S. Yankovsky, Nikolay N. Pertsev +12
During the summer season of 2025, noctilucent clouds (NLC) were observed at the latitudes 55-60N from the late May until the late August. A distinct 5-day periodicity in their occu…
TESS photometry of the nova eruption in V606 Vul: asymmetric photosphere and multiple ejections?
Kirill V. Sokolovsky, Elias Aydi, Konstantin Malanchev +70
Lightcurves of many classical novae deviate from the canonical "fast rise - smooth decline" pattern and display complex variability behavior. We present the first TESS-space-photom…
Evidence for symbiotic nature of 2MASS J21012803+4555377
A. M. Tatarnikov, A. A. Tatarnikova, N. A. Maslennikova +3
Just less than 300 symbiotic stars are currently known in the Galaxy. The population synthesis methods predict that this amount should be 10--100 times larger. In recent years, sev…
Disk in the circumstellar envelope of carbon Mira V Cygni
Boris S. Safonov, Sergey G. Zheltoukhov, Andrey M. Tatarnikov +2
AGB stars are the primary source of dust and complex molecules in the interstellar medium. The determination of outflow parameters is often hindered by the unknown geometry of the…
Five-years Altitude Statistics of Noctilucent Clouds Based on Multi-Site Wide-Field Camera Survey
Oleg S. Ugolnikov, Nikolay N. Pertsev, Vladimir I. Perminov +14
The results of simultaneous measurements of noctilucent clouds (NLC) position in a number of ground-based locations are presented. Observational data of 14 bright NLC events over 5…