High-frequency variations of hydrogen spectral lines in the B3V star η UMa
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
High-frequency variations of hydrogen spectral lines in the B3V star η UMa
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| Creator |
Pokhvala, S.M.
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| Description |
We reported the detection of high-frequency variations in the hydrogen Balmer lines in the hot star η UMa of spectral class B3V. Spectral observations of η UMa were carried out with slitless spectrograph (R ∼ 100) installed on the 60 cm Carl Zeiss telescope in the Andrushivka Observatory. Spectra were obtained with a time resolution in the sub-second range. It has been found that the η UMa shows rapid variations in the hydrogen lines Hα, Hβ, Hγ, as well as variations in the atmospheric oxygen lines. The intensity variations in the hydrogen lines varies from 0.2% to 0.5% , and that of the oxygen lines is approximately 2%.
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| Date |
2017-06-09T20:48:26Z
2017-06-09T20:48:26Z 2015 |
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| Type |
Article
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| Identifier |
High-frequency variations of hydrogen spectral lines in the B3V star η UMa / S.M. Pokhvala // Advances in Astronomy and Space Physics. — 2015. — Т. 5., вип. 1. — С. 21-23. — Бібліогр.: 7 назв. — англ.
2227-1481 DOI: 10.17721/2227-1481.5.21-23 http://dspace.nbuv.gov.ua/handle/123456789/119820 |
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| Language |
en
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| Relation |
Advances in Astronomy and Space Physics
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| Publisher |
Головна астрономічна обсерваторія НАН України
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