Normal modes and discovery of high-order cross-frequencies in the DBV white dwarf GD 358
Autor(a) principal: | |
---|---|
Data de Publicação: | 2000 |
Outros Autores: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/88769 |
Resumo: | We present a detailed mode identification performed on the 1994 Whole Earth Telescope (WET) run on GD 358. The results are compared with that obtained for the same star from the 1990 WET data. The two temporal spectra show very few qualitative differences, although amplitude changes are seen in most modes, including the disappearance of the mode identified as k = 14 in the 1990 data. The excellent coverage and signal-to-noise ratio obtained during the 1994 run lead to the secure identification of combination frequencies up to fourth order, i.e. peaks that are sums or differences of up to four parent frequencies, including a virtually complete set of second-order frequencies, as expected from harmonic distortion. We show how the third-order frequencies are expected to affect the triplet structure of the normal modes by back-interacting with them. Finally, a search for l = 2 modes was unsuccessful, not verifying the suspicion that such modes had been uncovered in the 1990 data set. |
id |
UFRGS-2_12cba0870b469004f6446770e8b602d2 |
---|---|
oai_identifier_str |
oai:www.lume.ufrgs.br:10183/88769 |
network_acronym_str |
UFRGS-2 |
network_name_str |
Repositório Institucional da UFRGS |
repository_id_str |
|
spelling |
Vuille, F.O'Donoghue, DarraghBuckley, David A.H.Massacand, C.N.Solheim, Jan-EricBard, S.Vauclair, GérardGiovannini Junior, OdilonKepler, Souza OliveiraKanaan Neto, Antonio NemerProvencal, Judith L.Wood, Matthew A.Clemens, J. ChristopherKleinman, Scot JamesO'Brien, M. SeanNather, R. EdwardWinget, Donald EarlNitta, AtsukoKlumpe, Eric W.Montgomery, Michael HoustonWatson, Todd K.Bradley, Paul A.Sullivan, Denis J.Wu, K.Marar, T.M. KrishnanSeetha, S.Ashoka, B.N.Mahra, H.S.Bhat, B.C.Babu, V.C.Leibowitz, Elia M.Hemar, ShirleyIbbetson, Peter A.Mashal, E.Meistas, Edmundas G.Moskalik, PawelZola, StaszekKrzesinski, JerzyPajdosz, Gabriel2014-03-21T01:49:02Z20000035-8711http://hdl.handle.net/10183/88769000275647We present a detailed mode identification performed on the 1994 Whole Earth Telescope (WET) run on GD 358. The results are compared with that obtained for the same star from the 1990 WET data. The two temporal spectra show very few qualitative differences, although amplitude changes are seen in most modes, including the disappearance of the mode identified as k = 14 in the 1990 data. The excellent coverage and signal-to-noise ratio obtained during the 1994 run lead to the secure identification of combination frequencies up to fourth order, i.e. peaks that are sums or differences of up to four parent frequencies, including a virtually complete set of second-order frequencies, as expected from harmonic distortion. We show how the third-order frequencies are expected to affect the triplet structure of the normal modes by back-interacting with them. Finally, a search for l = 2 modes was unsuccessful, not verifying the suspicion that such modes had been uncovered in the 1990 data set.application/pdfengMonthly notices of the Royal Astronomical Society. Oxford. Vol. 314, no. 4 (June 2000), p. 689-701Pulsacoes estelaresEstrelas variaveisAnãs brancasStars: individual: GD 358Stars: variables: otherWhite dwarfsNormal modes and discovery of high-order cross-frequencies in the DBV white dwarf GD 358Estrangeiroinfo: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:UFRGSORIGINAL000275647.pdf000275647.pdfTexto completo (inglês)application/pdf794338http://www.lume.ufrgs.br/bitstream/10183/88769/1/000275647.pdf0af4ea733e5c2991701929a1864b5dbdMD51TEXT000275647.pdf.txt000275647.pdf.txtExtracted Texttext/plain59750http://www.lume.ufrgs.br/bitstream/10183/88769/2/000275647.pdf.txt4ca8e5ac73b70c3018af3f1b512244e6MD52THUMBNAIL000275647.pdf.jpg000275647.pdf.jpgGenerated Thumbnailimage/jpeg1942http://www.lume.ufrgs.br/bitstream/10183/88769/3/000275647.pdf.jpg89294fb164f210a5e3914573efc91109MD5310183/887692018-10-18 08:30:17.492oai:www.lume.ufrgs.br:10183/88769Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-18T11:30:17Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Normal modes and discovery of high-order cross-frequencies in the DBV white dwarf GD 358 |
title |
Normal modes and discovery of high-order cross-frequencies in the DBV white dwarf GD 358 |
spellingShingle |
Normal modes and discovery of high-order cross-frequencies in the DBV white dwarf GD 358 Vuille, F. Pulsacoes estelares Estrelas variaveis Anãs brancas Stars: individual: GD 358 Stars: variables: other White dwarfs |
title_short |
Normal modes and discovery of high-order cross-frequencies in the DBV white dwarf GD 358 |
title_full |
Normal modes and discovery of high-order cross-frequencies in the DBV white dwarf GD 358 |
title_fullStr |
Normal modes and discovery of high-order cross-frequencies in the DBV white dwarf GD 358 |
title_full_unstemmed |
Normal modes and discovery of high-order cross-frequencies in the DBV white dwarf GD 358 |
title_sort |
Normal modes and discovery of high-order cross-frequencies in the DBV white dwarf GD 358 |
author |
Vuille, F. |
author_facet |
Vuille, F. O'Donoghue, Darragh Buckley, David A.H. Massacand, C.N. Solheim, Jan-Eric Bard, S. Vauclair, Gérard Giovannini Junior, Odilon Kepler, Souza Oliveira Kanaan Neto, Antonio Nemer Provencal, Judith L. Wood, Matthew A. Clemens, J. Christopher Kleinman, Scot James O'Brien, M. Sean Nather, R. Edward Winget, Donald Earl Nitta, Atsuko Klumpe, Eric W. Montgomery, Michael Houston Watson, Todd K. Bradley, Paul A. Sullivan, Denis J. Wu, K. Marar, T.M. Krishnan Seetha, S. Ashoka, B.N. Mahra, H.S. Bhat, B.C. Babu, V.C. Leibowitz, Elia M. Hemar, Shirley Ibbetson, Peter A. Mashal, E. Meistas, Edmundas G. Moskalik, Pawel Zola, Staszek Krzesinski, Jerzy Pajdosz, Gabriel |
author_role |
author |
author2 |
O'Donoghue, Darragh Buckley, David A.H. Massacand, C.N. Solheim, Jan-Eric Bard, S. Vauclair, Gérard Giovannini Junior, Odilon Kepler, Souza Oliveira Kanaan Neto, Antonio Nemer Provencal, Judith L. Wood, Matthew A. Clemens, J. Christopher Kleinman, Scot James O'Brien, M. Sean Nather, R. Edward Winget, Donald Earl Nitta, Atsuko Klumpe, Eric W. Montgomery, Michael Houston Watson, Todd K. Bradley, Paul A. Sullivan, Denis J. Wu, K. Marar, T.M. Krishnan Seetha, S. Ashoka, B.N. Mahra, H.S. Bhat, B.C. Babu, V.C. Leibowitz, Elia M. Hemar, Shirley Ibbetson, Peter A. Mashal, E. Meistas, Edmundas G. Moskalik, Pawel Zola, Staszek Krzesinski, Jerzy Pajdosz, Gabriel |
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 author author author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Vuille, F. O'Donoghue, Darragh Buckley, David A.H. Massacand, C.N. Solheim, Jan-Eric Bard, S. Vauclair, Gérard Giovannini Junior, Odilon Kepler, Souza Oliveira Kanaan Neto, Antonio Nemer Provencal, Judith L. Wood, Matthew A. Clemens, J. Christopher Kleinman, Scot James O'Brien, M. Sean Nather, R. Edward Winget, Donald Earl Nitta, Atsuko Klumpe, Eric W. Montgomery, Michael Houston Watson, Todd K. Bradley, Paul A. Sullivan, Denis J. Wu, K. Marar, T.M. Krishnan Seetha, S. Ashoka, B.N. Mahra, H.S. Bhat, B.C. Babu, V.C. Leibowitz, Elia M. Hemar, Shirley Ibbetson, Peter A. Mashal, E. Meistas, Edmundas G. Moskalik, Pawel Zola, Staszek Krzesinski, Jerzy Pajdosz, Gabriel |
dc.subject.por.fl_str_mv |
Pulsacoes estelares Estrelas variaveis Anãs brancas |
topic |
Pulsacoes estelares Estrelas variaveis Anãs brancas Stars: individual: GD 358 Stars: variables: other White dwarfs |
dc.subject.eng.fl_str_mv |
Stars: individual: GD 358 Stars: variables: other White dwarfs |
description |
We present a detailed mode identification performed on the 1994 Whole Earth Telescope (WET) run on GD 358. The results are compared with that obtained for the same star from the 1990 WET data. The two temporal spectra show very few qualitative differences, although amplitude changes are seen in most modes, including the disappearance of the mode identified as k = 14 in the 1990 data. The excellent coverage and signal-to-noise ratio obtained during the 1994 run lead to the secure identification of combination frequencies up to fourth order, i.e. peaks that are sums or differences of up to four parent frequencies, including a virtually complete set of second-order frequencies, as expected from harmonic distortion. We show how the third-order frequencies are expected to affect the triplet structure of the normal modes by back-interacting with them. Finally, a search for l = 2 modes was unsuccessful, not verifying the suspicion that such modes had been uncovered in the 1990 data set. |
publishDate |
2000 |
dc.date.issued.fl_str_mv |
2000 |
dc.date.accessioned.fl_str_mv |
2014-03-21T01:49:02Z |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/88769 |
dc.identifier.issn.pt_BR.fl_str_mv |
0035-8711 |
dc.identifier.nrb.pt_BR.fl_str_mv |
000275647 |
identifier_str_mv |
0035-8711 000275647 |
url |
http://hdl.handle.net/10183/88769 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Monthly notices of the Royal Astronomical Society. Oxford. Vol. 314, no. 4 (June 2000), p. 689-701 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFRGS instname:Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS |
instname_str |
Universidade Federal do Rio Grande do Sul (UFRGS) |
instacron_str |
UFRGS |
institution |
UFRGS |
reponame_str |
Repositório Institucional da UFRGS |
collection |
Repositório Institucional da UFRGS |
bitstream.url.fl_str_mv |
http://www.lume.ufrgs.br/bitstream/10183/88769/1/000275647.pdf http://www.lume.ufrgs.br/bitstream/10183/88769/2/000275647.pdf.txt http://www.lume.ufrgs.br/bitstream/10183/88769/3/000275647.pdf.jpg |
bitstream.checksum.fl_str_mv |
0af4ea733e5c2991701929a1864b5dbd 4ca8e5ac73b70c3018af3f1b512244e6 89294fb164f210a5e3914573efc91109 |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS) |
repository.mail.fl_str_mv |
|
_version_ |
1801224828341977088 |