Search Results - "Gopka, V"

Analysis of Actinium Abundances in the Atmosphere of Cepheid HIP13962 by Gopka, V. F., Shavrina, A. V., Yushchenko, V. A., Pavlenko, Ya. V., Yushchenko, A. V., Glazunova, L. V.

“…Actinium is a radioactive element that has an isotope 227 Ac with the longest half-life of 21.772(3) years. It is the third element in the actinoid group, in…”
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Peculiarities of the abundance of chemical elements in the atmosphere of PMMR23-red supergiant in the Small Magellanic Cloud due to interstellar gas accretion by Yushchenko, A. V., Gopka, V. F., Shavrina, A. V., Yushchenko, V. A., Vasileva, S. V., Andrievsky, S. M., Raikov, A. A., Kim, S., Rittipruk, P., Jeong, Y., Kang, Y.-W.

“…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…”
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Actinium Abundance in the Atmospheres of Three Red Supergiants in the Magellanic Clouds by Gopka, V. F., Shavrina, A. V., Yushchenko, V. A., Yushchenko, A. V., Pavlenko, Ya. V., Andrievsky, S. M., Vasileva, S. V., Kim, Ch, Jeong, Y., Lyubchik, Yu. P.

“…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…”
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HIP 13962 – THE POSSIBLE FORMER MEMBER OF BINARY SYSTEM WITH SUPERNOVA by Yushchenko, V., Yushchenko, A., Gopka, V., Shavrina, A., Kovtyukh, V., Hong, K. S., Mkrtichian, D., A-Thano, N.

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Identification of absorption lines of short half-life actinides in the spectrum of Przybylski’s star (HD 101065) by Gopka, V. F., Yushchenko, A. V., Yushchenko, V. A., Panov, I. V., Kim, Ch

“…Absorption lines of some actinides, namely, actinium ( Z = 89), protactinium (91), neptunium (93), plutonium (94), americium (95), curium (96), berkelium (97),…”
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A hypothesis for explaining the origin of Przybylski’s star (HD 101065) by Gopka, V. F., Ul’yanov, O. M., Andrievskii, S. M.

“…Many unidentified lines in the spectrum of Przybylski’s star (HD 101065) match well the spectral lines of radioactive elements, including the lines of…”
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Atmospheric chemical composition of the halo star HD 221170 from a synthetic-spectrum analysis by Gopka, V F, Yushchenko, A V, Mishenina, T V, Kim, Chulhee, Musaev, F A, Bondar', A V

“…The atmospheric abundances of 30 chemical elements in the halo star HD 221170 are analyzed by fitting synthetic spectra to observed spectra (i) with a…”
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ACTINIUM ABUNDANCES IN STELLAR ATMOSPHERES by Yushchenko, V., Gopka, V., Yushchenko, A.V., Shavrina, A., Pavlenkо, Ya, Vasil’eva, S.

“…This paper presents a study of radioactive  actinium in the atmospheres of stars located in galaxies with different chemical evolution history – namely,…”
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Characteristic features of the spectrum of the unique roAp star HD 101065 near the 6708 Å lithium resonance doublet by Shavrina, A V, Polosukhina, N S, Pavlenko, Ya V, Yushchenko, A V, Gopka, V F

“…Synthetic spectrum of the peculiar roAp star HD 101065 (Przybylski's Star) have been computed in the wavelength interval 6705.8-6708.7 Å in order to describe…”
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The abundances of heavy elements in the atmosphere of hyades giant 6 Tauri by V. F. Gopka

“…Comparison of synthetic spectrum of the б Tauri photosphere and high quality spectral atlas of this star permit us to identify absorption lines of iron and…”
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THE ABUNDANCES OF HEAVY ELEMENTS IN RED SUPERGIANTS OF MAGELLANIC CLOUDS by V. Gopka, A Yushchenko, V. Kovtyukh, A. Shavrina, V. Yushchenko, S. Vasilyeva, Y. Pavlenko, S. Andrievsky

“…The spectra of Magellanic Clouds (MC) supergiants PMMR23, PMMR144 and RM 1-667 with resolving power R=30,000 and signal to noise ratio near 100 obtained at3.6…”
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The chemical composition of δ Scuti by Yushchenko, A., Gopka, V., Kim, Chulhee, Musaev, F., Kang, Y. W., Kovtyukh, V., Soubiran, C.

“…We present chemical abundances in the photosphere of δ Scuti (δ Sct) – a prototype of the class of pulsating variables – determined from the analysis of a…”
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The chemical composition of [delta] Scuti by Yushchenko, A, Gopka, V, Kim, Chulhee, Musaev, F, Kang, Y W, Kovtyukh, V, Soubiran, C

“…We present chemical abundances in the photosphere of δ Scuti (δ Sct) - a prototype of the class of pulsating variables - determined from the analysis of a…”
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The chemical composition of d Scuti by Yushchenko, A, Gopka, V, Kim, Chulhee, Musaev, F, Kang, Y W, Kovtyukh, V, Soubiran, C

“…We present chemical abundances in the photosphere of d Scuti (d Sct) - a prototype of the class of pulsating variables - determined from the analysis of a…”
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THE CHEMICAL COMPOSITION OF PROCYON by A. V. Yushchenko, V. F. Gopka

“…The review of last studies on the chemical composition of Procyon showed that the abundances of 55 elements were investigated in the atmosphere of Procyon. The…”
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THE IDENTIFICATION OF ABSORPTION LINES OF DYSPROSIUM IN THE SOLAR SPECTRUM by A. V. Yushchenko, V. F. Gopka

“…12 additional absorption lines of Dy II were identified on the basis of calculations of synthetic spectrum and it's comparison with the spectral atlas of solar…”
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THE ABUNDANCES OF SOME HEAVY ELEMENTS IN THE ATMOSPHERE OF γ TAURI by A. V. Yushchenko, V. F. Gopka

“…Comparison of synthetic spectrum of the γ Tauri photosphere and high quality spectral atlases of this star permit us to identify absorption lines of rubidium,…”
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STELLAR ABUNDANCE. FROM QUANTITY TO QUALITY? by A. V. Yushchenko, V. F. Gopka

“…We present the overview of chemical compositions of the atmospheres of seven stars with the most detailed abundance patterns -- the Sun, Przybylski's star,…”
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ATMOSPHERIC PARAMETERS AND CHEMICAL COMPOSITION OF PECULIAR STARS HR465, HD91375, and HD25354 by V. Yushchenko, V. Gopka, A. Yushchenko, A. Shavrina, S. Hubrig, F. Musaev

“…We present the results of determinations of the atmospheric parameters and chemical composition of three chemically peculiar stars: HR465, HD91375, and…”
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ABOUT THE HEAVY ELEMENTS ABUNDANCES IN THE ATMOSPHERES OF STARS WITH LOW METALLICITY by V. F. Gopka, A. V. Yushchenko, T. V. Mishenina, V. V. Kovtyukh

“…We present results of preliminary determinations of abundances of heavy elements in three metal-poor stars: HD37828, HD44008, HD221170. Careful comparison of…”
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