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High-frequency variations of hydrogen spectral lines in the B3V star η UMa

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 we...

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Main Author: Pokhvala, S.M.
Format: Article
Language:English
Published: Головна астрономічна обсерваторія НАН України 2015
Series:Advances in Astronomy and Space Physics
Online Access:http://dspace.nbuv.gov.ua/handle/123456789/119820
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spelling irk-123456789-1198202017-06-10T03:03:22Z High-frequency variations of hydrogen spectral lines in the B3V star η UMa Pokhvala, S.M. 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%. 2015 Article 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 en Advances in Astronomy and Space Physics Головна астрономічна обсерваторія НАН України
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection DSpace DC
language English
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%.
format Article
author Pokhvala, S.M.
spellingShingle Pokhvala, S.M.
High-frequency variations of hydrogen spectral lines in the B3V star η UMa
Advances in Astronomy and Space Physics
author_facet Pokhvala, S.M.
author_sort Pokhvala, S.M.
title High-frequency variations of hydrogen spectral lines in the B3V star η UMa
title_short High-frequency variations of hydrogen spectral lines in the B3V star η UMa
title_full High-frequency variations of hydrogen spectral lines in the B3V star η UMa
title_fullStr High-frequency variations of hydrogen spectral lines in the B3V star η UMa
title_full_unstemmed High-frequency variations of hydrogen spectral lines in the B3V star η UMa
title_sort high-frequency variations of hydrogen spectral lines in the b3v star η uma
publisher Головна астрономічна обсерваторія НАН України
publishDate 2015
url http://dspace.nbuv.gov.ua/handle/123456789/119820
citation_txt 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.
series Advances in Astronomy and Space Physics
work_keys_str_mv AT pokhvalasm highfrequencyvariationsofhydrogenspectrallinesintheb3vstarēuma
first_indexed 2023-10-18T20:35:30Z
last_indexed 2023-10-18T20:35:30Z
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