Lithium and its isotopic ratio ⁶Li/⁷Li in the atmospheres of sharp-lined roAp stars γ Equulei and HD 166473
The lithium lines at 6708 Å for two sharp-lined roAp stars γ Equ and HD 166473 and at 6103 Å for γ Equ were analyzed in high resolution spectra. Three spectral synthesis codes – STARSP, ZEEMAN2, and SYNTHM – were used. New lines of the rare-earth elements from the DREAM database and lines calculated...
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| Опубліковано в: : | Кинематика и физика небесных тел |
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| Дата: | 2005 |
| Автори: | , , , , , , , , , , |
| Формат: | Стаття |
| Мова: | Англійська |
| Опубліковано: |
Головна астрономічна обсерваторія НАН України
2005
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| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/79662 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Lithium and its isotopic ratio ⁶Li/⁷Li in the atmospheres of sharp-lined roAp stars γ Equulei and HD 166473 / A. Shavrina, N. Polosukhina, S. Khan, Ya. Pavlenko, V. Khalack, G.A. Wade, P. Quinet, N. Mikhailitska, A. Yushchenko, V. Gopka, D. Kudryavtsev // Кинематика и физика небесных тел. — 2005. — Т. 21, № 5-додаток. — С. 295-298. — Бібліогр.: 16 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862532216357126144 |
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| author | Shavrina, A. Polosukhina, N. Khan, S. Pavlenko, Ya. Khalack, V. Wade, G.A. Quine, t P. Mikhailitska, N. Yushchenko, A. Gopka, V. Kudryavtsev, D. |
| author_facet | Shavrina, A. Polosukhina, N. Khan, S. Pavlenko, Ya. Khalack, V. Wade, G.A. Quine, t P. Mikhailitska, N. Yushchenko, A. Gopka, V. Kudryavtsev, D. |
| citation_txt | Lithium and its isotopic ratio ⁶Li/⁷Li in the atmospheres of sharp-lined roAp stars γ Equulei and HD 166473 / A. Shavrina, N. Polosukhina, S. Khan, Ya. Pavlenko, V. Khalack, G.A. Wade, P. Quinet, N. Mikhailitska, A. Yushchenko, V. Gopka, D. Kudryavtsev // Кинематика и физика небесных тел. — 2005. — Т. 21, № 5-додаток. — С. 295-298. — Бібліогр.: 16 назв. — англ. |
| collection | DSpace DC |
| container_title | Кинематика и физика небесных тел |
| description | The lithium lines at 6708 Å for two sharp-lined roAp stars γ Equ and HD 166473 and at 6103 Å for γ Equ were analyzed in high resolution spectra. Three spectral synthesis codes – STARSP, ZEEMAN2, and SYNTHM – were used. New lines of the rare-earth elements from the DREAM database and lines calculated on the basis of the NIST energy levels were included. Magnetic splitting and other line broadening processes were taken into account. Enhanced abundances of lithium in the atmospheres of the stars and high estimates of ⁶Li/⁷Li ratio (0.2 ÷ 0.5) can be explained by the Galactic Cosmic Ray (GCR) production due to spallation reactions and the preservation of original ⁶Li and ⁷Li by strong magnetic fields.
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| first_indexed | 2025-11-24T05:51:30Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-79662 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0233-7665 |
| language | English |
| last_indexed | 2025-11-24T05:51:30Z |
| publishDate | 2005 |
| publisher | Головна астрономічна обсерваторія НАН України |
| record_format | dspace |
| spelling | Shavrina, A. Polosukhina, N. Khan, S. Pavlenko, Ya. Khalack, V. Wade, G.A. Quine, t P. Mikhailitska, N. Yushchenko, A. Gopka, V. Kudryavtsev, D. 2015-04-03T17:55:56Z 2015-04-03T17:55:56Z 2005 Lithium and its isotopic ratio ⁶Li/⁷Li in the atmospheres of sharp-lined roAp stars γ Equulei and HD 166473 / A. Shavrina, N. Polosukhina, S. Khan, Ya. Pavlenko, V. Khalack, G.A. Wade, P. Quinet, N. Mikhailitska, A. Yushchenko, V. Gopka, D. Kudryavtsev // Кинематика и физика небесных тел. — 2005. — Т. 21, № 5-додаток. — С. 295-298. — Бібліогр.: 16 назв. — англ. 0233-7665 https://nasplib.isofts.kiev.ua/handle/123456789/79662 The lithium lines at 6708 Å for two sharp-lined roAp stars γ Equ and HD 166473 and at 6103 Å for γ Equ were analyzed in high resolution spectra. Three spectral synthesis codes – STARSP, ZEEMAN2, and SYNTHM – were used. New lines of the rare-earth elements from the DREAM database and lines calculated on the basis of the NIST energy levels were included. Magnetic splitting and other line broadening processes were taken into account. Enhanced abundances of lithium in the atmospheres of the stars and high estimates of ⁶Li/⁷Li ratio (0.2 ÷ 0.5) can be explained by the Galactic Cosmic Ray (GCR) production due to spallation reactions and the preservation of original ⁶Li and ⁷Li by strong magnetic fields. The authors are grateful to Dr. P. North for the ESO spectra and Dr. J. Zverko for the remarks to the manuscript. en Головна астрономічна обсерваторія НАН України Кинематика и физика небесных тел MS3: Physics of Stars and Galaxies Lithium and its isotopic ratio ⁶Li/⁷Li in the atmospheres of sharp-lined roAp stars γ Equulei and HD 166473 Article published earlier |
| spellingShingle | Lithium and its isotopic ratio ⁶Li/⁷Li in the atmospheres of sharp-lined roAp stars γ Equulei and HD 166473 Shavrina, A. Polosukhina, N. Khan, S. Pavlenko, Ya. Khalack, V. Wade, G.A. Quine, t P. Mikhailitska, N. Yushchenko, A. Gopka, V. Kudryavtsev, D. MS3: Physics of Stars and Galaxies |
| title | Lithium and its isotopic ratio ⁶Li/⁷Li in the atmospheres of sharp-lined roAp stars γ Equulei and HD 166473 |
| title_full | Lithium and its isotopic ratio ⁶Li/⁷Li in the atmospheres of sharp-lined roAp stars γ Equulei and HD 166473 |
| title_fullStr | Lithium and its isotopic ratio ⁶Li/⁷Li in the atmospheres of sharp-lined roAp stars γ Equulei and HD 166473 |
| title_full_unstemmed | Lithium and its isotopic ratio ⁶Li/⁷Li in the atmospheres of sharp-lined roAp stars γ Equulei and HD 166473 |
| title_short | Lithium and its isotopic ratio ⁶Li/⁷Li in the atmospheres of sharp-lined roAp stars γ Equulei and HD 166473 |
| title_sort | lithium and its isotopic ratio ⁶li/⁷li in the atmospheres of sharp-lined roap stars γ equulei and hd 166473 |
| topic | MS3: Physics of Stars and Galaxies |
| topic_facet | MS3: Physics of Stars and Galaxies |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/79662 |
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