Whole earth telescope observations of am canum venaticorum-discoseismology at last
Autor(a) principal: | |
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Data de Publicação: | 1998 |
Outros Autores: | , , , , , , , , , , , , , , , , , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/97465 |
Resumo: | We report the results of 143.2 hours of time-series photometry over a 12 day period for AM CVn (= HZ 29) as part of the Whole Earth Telescope (WET) project.ˡ This star is believed to be an ultra-short period cataclysmic binary. In the temporal spectrum of the light curve we find a series of 5 harmonically related frequency mo dulations, some with sidebands with a constant frequency spacing of 20.8 μHz always on the high-frequency side. The set of harmonics has a fundamental frequency of 951 μHz. No modulation is detected at this frequency in the light curve. In addition, modulations with frequencies 972.5 and 988.9 μHz are detected with low amplitudes. The structure of the dominant 1903 Hz modulation explains part of the “phase jitter” observed earlier. The amplitude of this peak is modulated with a period of 13.32 ± 0.05 hrs. |
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Solheim, Jan-EricProvencal, Judith L.Bradley, Paul A.Vauclair, GérardBarstow, Martin A.Kepler, Souza OliveiraFontaine, GillesGraver, A.D.Winget, Donald EarlMarar, T.M. KrishnanLeibowitz, Elia M.Enanvelsen, P.I.Chevreton, MichelDolez, NoëlKanaan Neto, Antonio NemerBergeron, PierreClaver, C.F.Clemens, J. ChristopherKleinman, Scot JamesHine, B.P.Seetha, S.Shoka, B.N.Mazeh, TseviSansom, A.E.Tweedy, P.W.Meistas, Edmundas G.Bruvold, A.Massacand, C.N.2014-07-11T02:05:18Z19980004-6361http://hdl.handle.net/10183/97465000233983We report the results of 143.2 hours of time-series photometry over a 12 day period for AM CVn (= HZ 29) as part of the Whole Earth Telescope (WET) project.ˡ This star is believed to be an ultra-short period cataclysmic binary. In the temporal spectrum of the light curve we find a series of 5 harmonically related frequency mo dulations, some with sidebands with a constant frequency spacing of 20.8 μHz always on the high-frequency side. The set of harmonics has a fundamental frequency of 951 μHz. No modulation is detected at this frequency in the light curve. In addition, modulations with frequencies 972.5 and 988.9 μHz are detected with low amplitudes. The structure of the dominant 1903 Hz modulation explains part of the “phase jitter” observed earlier. The amplitude of this peak is modulated with a period of 13.32 ± 0.05 hrs.application/pdfengAstronomy and Astrophysics. Berlin. Vol. 332, no. 3 (Apr. 1998), p. 939-957Astrofisica estelarEstrelas binarias cataclismicasAnãs brancasOscilacoesDiscos de acrecaoFotometriaEstrelas magneticasWhole earth telescope observations of am canum venaticorum-discoseismology at lastEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000233983.pdf000233983.pdfTexto completo (inglês)application/pdf699821http://www.lume.ufrgs.br/bitstream/10183/97465/1/000233983.pdfda6f031ffb1f2d20d521f56ff71354d2MD51TEXT000233983.pdf.txt000233983.pdf.txtExtracted Texttext/plain79824http://www.lume.ufrgs.br/bitstream/10183/97465/2/000233983.pdf.txtd7286883e46316b3c286a48e4d25066aMD52THUMBNAIL000233983.pdf.jpg000233983.pdf.jpgGenerated Thumbnailimage/jpeg1927http://www.lume.ufrgs.br/bitstream/10183/97465/3/000233983.pdf.jpg03d6cadf5aa226b93c14dc520eb58dc4MD5310183/974652018-10-08 08:17:31.899oai:www.lume.ufrgs.br:10183/97465Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-08T11:17:31Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Whole earth telescope observations of am canum venaticorum-discoseismology at last |
title |
Whole earth telescope observations of am canum venaticorum-discoseismology at last |
spellingShingle |
Whole earth telescope observations of am canum venaticorum-discoseismology at last Solheim, Jan-Eric Astrofisica estelar Estrelas binarias cataclismicas Anãs brancas Oscilacoes Discos de acrecao Fotometria Estrelas magneticas |
title_short |
Whole earth telescope observations of am canum venaticorum-discoseismology at last |
title_full |
Whole earth telescope observations of am canum venaticorum-discoseismology at last |
title_fullStr |
Whole earth telescope observations of am canum venaticorum-discoseismology at last |
title_full_unstemmed |
Whole earth telescope observations of am canum venaticorum-discoseismology at last |
title_sort |
Whole earth telescope observations of am canum venaticorum-discoseismology at last |
author |
Solheim, Jan-Eric |
author_facet |
Solheim, Jan-Eric Provencal, Judith L. Bradley, Paul A. Vauclair, Gérard Barstow, Martin A. Kepler, Souza Oliveira Fontaine, Gilles Graver, A.D. Winget, Donald Earl Marar, T.M. Krishnan Leibowitz, Elia M. Enanvelsen, P.I. Chevreton, Michel Dolez, Noël Kanaan Neto, Antonio Nemer Bergeron, Pierre Claver, C.F. Clemens, J. Christopher Kleinman, Scot James Hine, B.P. Seetha, S. Shoka, B.N. Mazeh, Tsevi Sansom, A.E. Tweedy, P.W. Meistas, Edmundas G. Bruvold, A. Massacand, C.N. |
author_role |
author |
author2 |
Provencal, Judith L. Bradley, Paul A. Vauclair, Gérard Barstow, Martin A. Kepler, Souza Oliveira Fontaine, Gilles Graver, A.D. Winget, Donald Earl Marar, T.M. Krishnan Leibowitz, Elia M. Enanvelsen, P.I. Chevreton, Michel Dolez, Noël Kanaan Neto, Antonio Nemer Bergeron, Pierre Claver, C.F. Clemens, J. Christopher Kleinman, Scot James Hine, B.P. Seetha, S. Shoka, B.N. Mazeh, Tsevi Sansom, A.E. Tweedy, P.W. Meistas, Edmundas G. Bruvold, A. Massacand, C.N. |
author2_role |
author author author author author author author author author author author author author author author author author author author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Solheim, Jan-Eric Provencal, Judith L. Bradley, Paul A. Vauclair, Gérard Barstow, Martin A. Kepler, Souza Oliveira Fontaine, Gilles Graver, A.D. Winget, Donald Earl Marar, T.M. Krishnan Leibowitz, Elia M. Enanvelsen, P.I. Chevreton, Michel Dolez, Noël Kanaan Neto, Antonio Nemer Bergeron, Pierre Claver, C.F. Clemens, J. Christopher Kleinman, Scot James Hine, B.P. Seetha, S. Shoka, B.N. Mazeh, Tsevi Sansom, A.E. Tweedy, P.W. Meistas, Edmundas G. Bruvold, A. Massacand, C.N. |
dc.subject.por.fl_str_mv |
Astrofisica estelar Estrelas binarias cataclismicas Anãs brancas Oscilacoes Discos de acrecao Fotometria Estrelas magneticas |
topic |
Astrofisica estelar Estrelas binarias cataclismicas Anãs brancas Oscilacoes Discos de acrecao Fotometria Estrelas magneticas |
description |
We report the results of 143.2 hours of time-series photometry over a 12 day period for AM CVn (= HZ 29) as part of the Whole Earth Telescope (WET) project.ˡ This star is believed to be an ultra-short period cataclysmic binary. In the temporal spectrum of the light curve we find a series of 5 harmonically related frequency mo dulations, some with sidebands with a constant frequency spacing of 20.8 μHz always on the high-frequency side. The set of harmonics has a fundamental frequency of 951 μHz. No modulation is detected at this frequency in the light curve. In addition, modulations with frequencies 972.5 and 988.9 μHz are detected with low amplitudes. The structure of the dominant 1903 Hz modulation explains part of the “phase jitter” observed earlier. The amplitude of this peak is modulated with a period of 13.32 ± 0.05 hrs. |
publishDate |
1998 |
dc.date.issued.fl_str_mv |
1998 |
dc.date.accessioned.fl_str_mv |
2014-07-11T02:05:18Z |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
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format |
article |
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publishedVersion |
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http://hdl.handle.net/10183/97465 |
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0004-6361 |
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000233983 |
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http://hdl.handle.net/10183/97465 |
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eng |
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eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Astronomy and Astrophysics. Berlin. Vol. 332, no. 3 (Apr. 1998), p. 939-957 |
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openAccess |
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