Zobrazeno 1 - 10 of 26 pro vyhledávání: '"Angelina Shavrina"'
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Akademický článek
The Radioactive Elements in the Atmosphere of HD25354—Are They the Result of the Symmetric Decay of the Chemical Elements of the Island of Stability?
Autor: Volodymyr Yushchenko, Vira Gopka, Alexander Yushchenko, Aizat Demessinova, Yeuncheol Jeong, Yakiv Pavlenko, Angelina Shavrina, Faig Musaev, Nazgul Alimgazinova
Publikováno v: Galaxies, Vol 12, Iss 5, p 57 (2024)
In this research, we investigated the observed spectra of the hot peculiar star HD25354 with an effective temperature Teff = 12,800 K, identified the lines of radioactive chemical elements, including the elements with short decay time, and estimated
Externí odkaz: https://doaj.org/article/17555e10742f4326b18bbe0b4e4508cb
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3
Actinium Abundance in the Atmospheres of Three Red Supergiants in the Magellanic Clouds
Autor: V. F. Gopka, Y. Jeong, Ch. Kim, S. V. Vasil'Eva, S. M. Andrievsky, Angelina Shavrina, A. V. Yushchenko, Yu. Lyubchik, Ya. V. Pavlenko, V. A. Yushchenko
Publikováno v: Kinematics and Physics of Celestial Bodies. 34:123-133
The actinium abundance in the atmospheres of red supergiants PMMR23 and PMMR144 in the Small Magellanic Cloud and RM_1-667 in the Large Magellanic Cloud was estimated. The results of spectral observations with the ESO 3.6-m telescope with resolving p
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::90b1312f3ab7ecea6a85a0d2c53b659e
https://doi.org/10.3103/s0884591318030054
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5
Peculiarities of the abundance of chemical elements in the atmosphere of PMMR23-red supergiant in the Small Magellanic Cloud due to interstellar gas accretion
Autor: V. F. Gopka, Pakakaew Rittipruk, Angelina Shavrina, Young-Woon Kang, Y. Jeong, Sungeun Kim, S. M. Andrievsky, A. A. Raikov, A. V. Yushchenko, V. A. Yushchenko, S. V. Vasil'Eva
Publikováno v: Kinematics and Physics of Celestial Bodies. 33:199-216
The chemical composition of the PMMR23 red supergiant located in the Small Magellanic Cloud (SMC) is analyzed. The abundance of 35 chemical elements and the upper limits of abundance for Tl and U are found. The relative abundance of heavy elements is
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::673f8f09982d77e8d17c6bbf7dbd3cd2
https://doi.org/10.3103/s0884591317050075
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6
HIP 13962 – THE POSSIBLE FORMER MEMBER OF BINARY SYSTEM WITH SUPERNOVA
Autor: N. A-thano, V. V. Kovtyukh, V. F. Gopka, David Mkrtichian, Angelina Shavrina, Alexander V. Yushchenko, V. Yushchenko, K. S. Hong
Publikováno v: Odessa Astronomical Publications; Том 29 (2016); 229-232
Odessa Astronomical Publications; Том 29 (2016): Odessa Astronomical Publications; 229-232
Odessa Astronomical Publications, Vol 29, Iss 0, Pp 229-232 (2016)
The run away supergiant star HIP13962 (spectral type G0Ia) was recently pointed as a possible former binary companion of young pulsar PSRJ0826+2637. The spectraof HIP13962 wereo btained in Haute-Provence observatory (France), in Bohuynsan observatory
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1e62a4e5188ef9a0085e4c113a06e8f6
https://doi.org/10.18524/1810-4215.2016.29.85238
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7
On the thorium absorption lines in the visible spectra of supergiant stars in the magellanic clouds
Autor: S. V. Vasil'Eva, A. V. Yushchenko, V. A. Yushchenko, V. F. Gopka, Angelina Shavrina, S. M. Andrievsky
Publikováno v: Bulletin of the Crimean Astrophysical Observatory. 109:41-47
We present the results of the analysis of thorium absorption lines in the spectra of metal-deficient stars: the thorium-rich Galactic halo star HD 221170 and some supergiants in the Magellanic Clouds. For all the analyzed stars, the Th II lines were
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::befee98489729d078c600ec9e243af14
https://doi.org/10.3103/s0190271713010087
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8
Spectral observations using a BTA telescope of chemically peculiar stars in the spectral region near the Li I (6708 Å) resonance doublet
Autor: N. Polosukhina, M. Smirnova, N. Drake, Angelina Shavrina, D. Kudryavtsev
Publikováno v: Bulletin of the Crimean Astrophysical Observatory. 106:57-62
New spectral observations of chemically peculiar (CP) magnetic stars were obtained using an NES echelle spectrometer with a BTA telescope in the Special Astrophysical Observatory (Russian Academy of Sciences). Several stars were shown to have anomalo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::01724f1da48943a6f16a2d3b88e80b9f
https://doi.org/10.3103/s0190271710010109
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9
Some properties of the He-w star HD 35502
Autor: G. A. Chountonov, Ya. V. Pavlenko, Yu. V. Glagolevskij, Angelina Shavrina
Publikováno v: Astrophysics. 53:133-146
This is a preliminary study of the star HD 35502. Its magnetic field has been measured in different phases of its period. Preliminary values of the magnetic field parameters have been obtained based on a central quadrupole model. The effective magnet
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8d7727f602d0c91550e0bff8d65cc4db
https://doi.org/10.1007/s10511-010-9106-0
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10
A 3-D look into the atmosphere?
Autor: S. Hubrig, Angelina Shavrina, Gregg A. Wade, Maryline Briquet, Michael Gruberbauer, Glenn M. Wahlgren, Lyudmila Mashonkina, Tatiana Ryabchikova, L. Cidale, J. Ziznovsky, N. Polosukhina, Kutluay Yüce, Olga Pintado, N. Nunez, Oleg Kochukhov, T. Nomura, J. Silvester, R. O. Gray, Natalia A. Drake, J. C. Sousa, Michael M. Dworetsky, Charles R. Cowley, Jiří Krtička
Publikováno v: HIGHLIGHTS OF ASTRONOMY VOL 15
The atmospheres of chemically peculiar stars can be highly structured in both the horizontal and vertical dimensions. While most prevalent in the magnetic stars, these structures can also exist in non-magnetic stars. In addition to providing an impor
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57f1710be5839328eaca089bd919ab44
https://doi.org/10.1017/s1743921310008550
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