7 citations · 12 across the 6 of their papers we have counts for
7 papers
Ukrainian Wartime Astronomy and its Prospects
Danilo Albergaria, Kateryna Frantseva, Pedro Russo +20
The Russian invasion of Ukraine damaged or compromised astronomical facilities and has prompted the displacement of researchers. A plan to restore Ukrainian astronomy, rooted in a…
Multi-harmonic and special shape/pattern/template approximations of discrete signals with generally irregular arguments
Ivan L. Andronov, Hanna M. Akopian, Vitalii V. Breus +7
The invited review of own algorithms and software (MAVKA and MCV) for the data analysis of astronomical signals - irregularly spaced, multi-periodic multi-harmonic, periodogram ana…
Period Variations and Possible Third Components in the Eclipsing Binaries AH Tauri and ZZ Cassiopeiae
D. E. Tvardovskyi, V. I. Marsakova, I. L. Andronov +1
We investigated two variable stars AH Tau and ZZ Cas. They are eclipsing binaries of W UMa and Lyr types. The period changes with time. The reason for steady changes of the per…
Effects of the Mass Transfer and Presence of the Third Components in Close Binary Stellar Systems
Dmytro E. Tvardovskyi, Vladyslava I. Marsakova, Ivan L. Andronov
In our research, we have studied 6 close binary stellar systems which are eclipsing variables of Lyrae and W Ursae Majoris types of variability. We have studied their O-C curve…
Instabilities in Interacting Binary Stars
Ivan L. Andronov, K. D. Andrych, K. A. Antoniuk +43
The types of instability in the interacting binary stars are reviewed. The project "Inter-Longitude Astronomy" is a series of smaller projects on concrete stars or groups of stars.…
"Asymptotic Parabola" Fits for Smoothing Generally Asymmetric Light Curves
Kateryna D. Andrych, Ivan L Andronov, Lidia L. Chinarova +1
A computer program is introduced, which allows to determine statistically optimal approxi-mation using the "Asymptotic Parabola" fit, or, in other words, the spline consisting of p…
Impact of Pulsation Activity on the Light Curves of Symbiotic Variables
Vladyslava I. Marsakova, Ivan L. Andronov, Lidia L. Chinarova +2
We used long-term visual amateur observations of several symbiotic variables for detection of periods that may be caused by pulsation. The examples of multiple periodicities are di…