Zobrazeno 1 - 10
of 181
pro vyhledávání: '"Romanyuk, I. I."'
Autor:
Semenko, E., Kochukhov, O., Mikulášek, Z., Wade, G. A., Alecian, E., Bohlender, D., Das, B., Feliz, D. L., Janík, J., Kolař, J., Krtička, J., Kudryavtsev, D. O., Labadie-Bartz, J. M., Mkrtichian, D., Monin, D., Petit, V., Romanyuk, I. I., Shultz, M. E., Shulyak, D., Siverd, R. J., Tkachenko, A., Yakunin, I. A., Zejda, M., collaboration, the BinaMIcS
We report the results of a comprehensive study of the spectroscopic binary (SB2) system HD 34736 hosting two chemically peculiar (CP) late B-type stars. Using new and archival observational data, we characterise the system and its components, includi
Externí odkaz:
http://arxiv.org/abs/2411.05376
Autor:
Yakovlev, O. Ya., Valeev, A. F., Valyavin, G. G., Aitov, V. N., Mitiani, G. Sh., Fatkhullin, T. A., Beskin, G. M., Tavrov, A. V., Korablev, O. I., Galazutdinov, G. A., Vlasyuk, V. V., Emelianov, E. V., Sasyuk, V. V., Perkov, A. V., Bondar, S. F., Burlakova, T. E., Fabrika, S. N., Romanyuk, I. I.
We present a catalog of 150 variable stars, including 13 stars with exoplanet candidates. 37 stars were identified as variables for the first time. As a result of a 2.5-year photometric survey of exoplanets, we have obtained and analyzed light curves
Externí odkaz:
http://arxiv.org/abs/2404.10027
The paper presents the first results of the ongoing spectropolarimetric monitoring of magnetic fields of stars, whose chemically peculiar nature has been previously revealed with the 1-m SAO RAS telescope. We selected the sample candidates using the
Externí odkaz:
http://arxiv.org/abs/2305.04898
Autor:
Yakovlev, O. Ya., Valeev, A. F., Valyavin, G. G., Tavrov, A. V., Aitov, V. N., Mitiani, G. Sh., Beskin, G. M., Vlasyuk, V. V., Korablev, O. I., Galazutdinov, G. A., Emelianov, E. V., Fatkhullin, T. A., Sasyuk, V. V., Perkov, A. V., Bondar, S. F., Burlakova, T. E., Fabrika, S. N., Romanyuk, I. I.
Here we present eight new candidates for exoplanets detected by the transit method at the Special Astrophysical Observatory of the Russian Academy of Sciences. Photometric observations were performed with a 50-cm robotic telescope during the second h
Externí odkaz:
http://arxiv.org/abs/2304.01076
Autor:
Yakovlev, O. Ya., Valeev, A. F., Valyavin, G. G., Tavrov, A. V., Aitov, V. N., Mitiani, G. Sh., Korablev, O. I., Galazutdinov, G. A., Beskin, G. M., Emelianov, E. V., Fatkhullin, T. A., Vlasyuk, V. V., Sasyuk, V. V., Perkov, A. V., Bondar, S., Burlakova, T. E., Fabrika, S. N., Romanyuk, I. I.
We used the 0.5-m robotic telescopes located at the Special Astrophysical Observatory of the Russian Academy of Sciences for monitoring two square degrees of the sky with the aim of detecting new exoplanets. A dimming of the visible brightness is exp
Externí odkaz:
http://arxiv.org/abs/2206.06030
The paper presents magnetic field measurements for 15 chemically peculiar (CP) stars of subgroup~1b in the OrionOB1 association. We have found that the proportion of stars with strong magnetic fields among these 15 CP stars is almost twice as large a
Externí odkaz:
http://arxiv.org/abs/2104.02434
Autor:
Mathys, G., Romanyuk, I. I., Hubrig, S., Kudryavtsev, D. O., Schöller, M., Semenko, E. A., Yakunin, I. A.
Publikováno v:
A&A 629, A39 (2019)
Context. One of the keys to understanding the origin of the Ap stars and their significance in the general context of stellar astrophysics is the consideration of the most extreme properties displayed by some of them. In that context, HD 965 is parti
Externí odkaz:
http://arxiv.org/abs/1907.10675
A detailed spectroscopic survey of chemically peculiar (CP) stars in the Orion OB1 association is the most comprehensive observational program in the field of stellar magnetism that has been carried out at SAO so far. As at the end of 2018, we have c
Externí odkaz:
http://arxiv.org/abs/1905.08950
Autor:
Mathys, G., Romanyuk, I. I., Hubrig, S., Kudryavtsev, D. O., Landstreet, J. D., Schöller, M., Semenko, E. A., Yakunin, I. A.
Publikováno v:
A&A 624, A32 (2019)
Context. The Ap stars that rotate extremely slowly, with periods of decades to centuries, represent one of the keys to the understanding of the processes leading to the differentiation of stellar rotation. Aims. We characterise the variations of the
Externí odkaz:
http://arxiv.org/abs/1902.05869
Publikováno v:
2017, Astrophysical Bulletin, 72, 391
We present the results of measurements of magnetic fields, radial velocities and rotation velocities for 92 objects, mainly main-sequence chemically peculiar stars. Observations were performed at the 6-m BTA telescope using Main Stellar Spectrograph
Externí odkaz:
http://arxiv.org/abs/1803.09957