Smooth time variation spectra as a tool to study line profile variability in spectra of hot stars
Line profiles in spectra of almost all OB stars are variable. In many cases the line profile variations are extremely weak (not more than 1% of the continuum level). For detection of such micro line profile variations of various nature we used a smooth Time Variation Spectra method (smTVS). This met...
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| Veröffentlicht in: | Advances in Astronomy and Space Physics |
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| Datum: | 2012 |
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| Format: | Artikel |
| Sprache: | Englisch |
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Головна астрономічна обсерваторія НАН України
2012
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| Online Zugang: | https://nasplib.isofts.kiev.ua/handle/123456789/119105 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Smooth time variation spectra as a tool to study line profile variability in spectra of hot stars / N.P. Sudnik // Advances in Astronomy and Space Physics. — 2012. — Т. 2., вип. 1. — С. 5-8. — Бібліогр.: 10 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862573784493457408 |
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| author | Sudnik, N.P. |
| author_facet | Sudnik, N.P. |
| citation_txt | Smooth time variation spectra as a tool to study line profile variability in spectra of hot stars / N.P. Sudnik // Advances in Astronomy and Space Physics. — 2012. — Т. 2., вип. 1. — С. 5-8. — Бібліогр.: 10 назв. — англ. |
| collection | DSpace DC |
| container_title | Advances in Astronomy and Space Physics |
| description | Line profiles in spectra of almost all OB stars are variable. In many cases the line profile variations are extremely weak (not more than 1% of the continuum level). For detection of such micro line profile variations of various nature we used a smooth Time Variation Spectra method (smTVS). This method appeared to be very sensitive and can be used to detect ultra weak line profile variations which can not be detected by other methods. We applied the smTVS method to detect the micro LPV in spectra of bright O stars λ Cep, λ Ori A and ζ Ori A. Spectra of these stars were obtained by using the 6-m and 1-m telescopes of the Northern Caucasus Special Astrophysical Observatory (Russia) and the 1.8-m telescope of Bohyunsan Astronomical Observatory (Korea).
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| first_indexed | 2025-11-26T08:17:25Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-119105 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 2227-1481 |
| language | English |
| last_indexed | 2025-11-26T08:17:25Z |
| publishDate | 2012 |
| publisher | Головна астрономічна обсерваторія НАН України |
| record_format | dspace |
| spelling | Sudnik, N.P. 2017-06-04T11:24:43Z 2017-06-04T11:24:43Z 2012 Smooth time variation spectra as a tool to study line profile variability in spectra of hot stars / N.P. Sudnik // Advances in Astronomy and Space Physics. — 2012. — Т. 2., вип. 1. — С. 5-8. — Бібліогр.: 10 назв. — англ. 2227-1481 https://nasplib.isofts.kiev.ua/handle/123456789/119105 Line profiles in spectra of almost all OB stars are variable. In many cases the line profile variations are extremely weak (not more than 1% of the continuum level). For detection of such micro line profile variations of various nature we used a smooth Time Variation Spectra method (smTVS). This method appeared to be very sensitive and can be used to detect ultra weak line profile variations which can not be detected by other methods. We applied the smTVS method to detect the micro LPV in spectra of bright O stars λ Cep, λ Ori A and ζ Ori A. Spectra of these stars were obtained by using the 6-m and 1-m telescopes of the Northern Caucasus Special Astrophysical Observatory (Russia) and the 1.8-m telescope of Bohyunsan Astronomical Observatory (Korea). The author acknowledges Saint-Petersburg State University for a research grant 6.38.73.2011. en Головна астрономічна обсерваторія НАН України Advances in Astronomy and Space Physics Smooth time variation spectra as a tool to study line profile variability in spectra of hot stars Article published earlier |
| spellingShingle | Smooth time variation spectra as a tool to study line profile variability in spectra of hot stars Sudnik, N.P. |
| title | Smooth time variation spectra as a tool to study line profile variability in spectra of hot stars |
| title_full | Smooth time variation spectra as a tool to study line profile variability in spectra of hot stars |
| title_fullStr | Smooth time variation spectra as a tool to study line profile variability in spectra of hot stars |
| title_full_unstemmed | Smooth time variation spectra as a tool to study line profile variability in spectra of hot stars |
| title_short | Smooth time variation spectra as a tool to study line profile variability in spectra of hot stars |
| title_sort | smooth time variation spectra as a tool to study line profile variability in spectra of hot stars |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/119105 |
| work_keys_str_mv | AT sudniknp smoothtimevariationspectraasatooltostudylineprofilevariabilityinspectraofhotstars |