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pro vyhledávání: '"Tvardovskyi, D."'
Autor:
Tvardovskyi, D. E.
This is our regular research in the field of cyclic O-C changes and third components. In this article the results of four new stars investigation is described. These stars are: BD And, SV Cam, V0836 Cyg and XZ CMi. All of them have cyclic O-C curve w
Externí odkaz:
http://arxiv.org/abs/2012.12322
Autor:
Kobzar, O., Khalack, V., Bohlender, D., David-Uraz, A., Kashko, P., Bowman, D. M., Lovekin, C., Tvardovskyi, D., Perron-Cormier, M., Paunzen, E., Sikora, J., Lampens, P., Richard, O.
Since the end of 2018, the Transiting Exoplanet Survey Satellite (TESS) provides high-quality space data on stellar photometry to the astronomical community. We present the results of an analysis of TESS photometric data for known slowly rotating mag
Externí odkaz:
http://arxiv.org/abs/2003.05337
Autor:
Tvardovskyi, D. E.
This research is our forth article related to the topic of cyclic O-C changes, third components as the physical process that cause these changes and elliptical orbits of the third components. Here five more eclipsing binary stars were investigated: E
Externí odkaz:
http://arxiv.org/abs/1912.12639
In our research, we studied 9 eclipsing binary stars: AR Lac, U CrB, S Equ, SU Boo, VV UMa, WW Gem, YY Eri, V0404 Lyr, HP Aur. We collected large sets of moments of minima from BRNO and observational data from AAVSO databases. Then, we obtained momen
Externí odkaz:
http://arxiv.org/abs/1912.02087
We investigated two variable stars AH Tau and ZZ Cas. They are eclipsing binaries of W UMa and $\beta$ Lyr types. The period changes with time. The reason for steady changes of the period could be the mass transfer (the flow of matter) between compon
Externí odkaz:
http://arxiv.org/abs/1810.09256
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