On the possible generation of the young massive open clusters Stephenson 2 and BDSB122 by ω Centauri
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/99255 |
Resumo: | Context. Passing through the disk of a galaxy, a massive object such as a globular cluster can trigger star formation. Aims. We test the hypothesis that the most massive globular cluster in the Galaxy, ωCentauri, which crossed the disk approximately 24 ± 2Myr ago, may have triggered the formation of the open clusters Stephenson 2 and BDSB122. Methods. The orbits of ωCentauri, Stephenson 2, and BDSB122 are computed for the three-component model of Johnston, Hernquist & Bolte, which considers the disk, spheroidal, and halo gravitational potentials. Results. With the reconstructed orbit of ωCentauri, we show that the latest impact site is consistent, within significant uncertainties, with the birth-site of the young massive open clusters BDSB122 and Stephenson 2.Within the uncertainties, this scenario is consistent with the timescale of their backward motion in the disk, shock propagation and delayed star formation. Conclusions. Together with open cluster formation associated with density waves in spiral arms, the present results are consistent with massive globular clusters being additional progenitors of open clusters, the most massive ones in particular. |
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Salerno, Gustavo MaltaBica, Eduardo Luiz DamianiBonatto, Charles JoseRodrigues, Irapuan2014-08-08T02:06:56Z20090004-6361http://hdl.handle.net/10183/99255000827215Context. Passing through the disk of a galaxy, a massive object such as a globular cluster can trigger star formation. Aims. We test the hypothesis that the most massive globular cluster in the Galaxy, ωCentauri, which crossed the disk approximately 24 ± 2Myr ago, may have triggered the formation of the open clusters Stephenson 2 and BDSB122. Methods. The orbits of ωCentauri, Stephenson 2, and BDSB122 are computed for the three-component model of Johnston, Hernquist & Bolte, which considers the disk, spheroidal, and halo gravitational potentials. Results. With the reconstructed orbit of ωCentauri, we show that the latest impact site is consistent, within significant uncertainties, with the birth-site of the young massive open clusters BDSB122 and Stephenson 2.Within the uncertainties, this scenario is consistent with the timescale of their backward motion in the disk, shock propagation and delayed star formation. Conclusions. Together with open cluster formation associated with density waves in spiral arms, the present results are consistent with massive globular clusters being additional progenitors of open clusters, the most massive ones in particular.application/pdfengAstronomy and astrophysics. Les Ulis. Vol. 498, no. 2 (May 2009), p. 419-423Aglomerados estelares globularesFormacao de estrelasGalaxiaGravitacaoGalaxy: globular clusters: individual: ωCentauriGalaxy: open clusters and associations: individual: BDSBGalaxy: open clusters and associations: individual: Stephenson 2On the possible generation of the young massive open clusters Stephenson 2 and BDSB122 by ω CentauriEstrangeiroinfo: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:UFRGSORIGINAL000827215.pdf000827215.pdfTexto completo (inglês)application/pdf574063http://www.lume.ufrgs.br/bitstream/10183/99255/1/000827215.pdf0521538639fb70a588ca66ffb1a6f2ebMD51TEXT000827215.pdf.txt000827215.pdf.txtExtracted Texttext/plain25036http://www.lume.ufrgs.br/bitstream/10183/99255/2/000827215.pdf.txt37f76502f286181eb5e58b510801ce7dMD52THUMBNAIL000827215.pdf.jpg000827215.pdf.jpgGenerated Thumbnailimage/jpeg2157http://www.lume.ufrgs.br/bitstream/10183/99255/3/000827215.pdf.jpgedde13589c339446c83ca298769b5a29MD5310183/992552023-07-15 03:27:13.288273oai:www.lume.ufrgs.br:10183/99255Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-07-15T06:27:13Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
On the possible generation of the young massive open clusters Stephenson 2 and BDSB122 by ω Centauri |
title |
On the possible generation of the young massive open clusters Stephenson 2 and BDSB122 by ω Centauri |
spellingShingle |
On the possible generation of the young massive open clusters Stephenson 2 and BDSB122 by ω Centauri Salerno, Gustavo Malta Aglomerados estelares globulares Formacao de estrelas Galaxia Gravitacao Galaxy: globular clusters: individual: ωCentauri Galaxy: open clusters and associations: individual: BDSB Galaxy: open clusters and associations: individual: Stephenson 2 |
title_short |
On the possible generation of the young massive open clusters Stephenson 2 and BDSB122 by ω Centauri |
title_full |
On the possible generation of the young massive open clusters Stephenson 2 and BDSB122 by ω Centauri |
title_fullStr |
On the possible generation of the young massive open clusters Stephenson 2 and BDSB122 by ω Centauri |
title_full_unstemmed |
On the possible generation of the young massive open clusters Stephenson 2 and BDSB122 by ω Centauri |
title_sort |
On the possible generation of the young massive open clusters Stephenson 2 and BDSB122 by ω Centauri |
author |
Salerno, Gustavo Malta |
author_facet |
Salerno, Gustavo Malta Bica, Eduardo Luiz Damiani Bonatto, Charles Jose Rodrigues, Irapuan |
author_role |
author |
author2 |
Bica, Eduardo Luiz Damiani Bonatto, Charles Jose Rodrigues, Irapuan |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Salerno, Gustavo Malta Bica, Eduardo Luiz Damiani Bonatto, Charles Jose Rodrigues, Irapuan |
dc.subject.por.fl_str_mv |
Aglomerados estelares globulares Formacao de estrelas Galaxia Gravitacao |
topic |
Aglomerados estelares globulares Formacao de estrelas Galaxia Gravitacao Galaxy: globular clusters: individual: ωCentauri Galaxy: open clusters and associations: individual: BDSB Galaxy: open clusters and associations: individual: Stephenson 2 |
dc.subject.eng.fl_str_mv |
Galaxy: globular clusters: individual: ωCentauri Galaxy: open clusters and associations: individual: BDSB Galaxy: open clusters and associations: individual: Stephenson 2 |
description |
Context. Passing through the disk of a galaxy, a massive object such as a globular cluster can trigger star formation. Aims. We test the hypothesis that the most massive globular cluster in the Galaxy, ωCentauri, which crossed the disk approximately 24 ± 2Myr ago, may have triggered the formation of the open clusters Stephenson 2 and BDSB122. Methods. The orbits of ωCentauri, Stephenson 2, and BDSB122 are computed for the three-component model of Johnston, Hernquist & Bolte, which considers the disk, spheroidal, and halo gravitational potentials. Results. With the reconstructed orbit of ωCentauri, we show that the latest impact site is consistent, within significant uncertainties, with the birth-site of the young massive open clusters BDSB122 and Stephenson 2.Within the uncertainties, this scenario is consistent with the timescale of their backward motion in the disk, shock propagation and delayed star formation. Conclusions. Together with open cluster formation associated with density waves in spiral arms, the present results are consistent with massive globular clusters being additional progenitors of open clusters, the most massive ones in particular. |
publishDate |
2009 |
dc.date.issued.fl_str_mv |
2009 |
dc.date.accessioned.fl_str_mv |
2014-08-08T02:06:56Z |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
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publishedVersion |
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http://hdl.handle.net/10183/99255 |
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0004-6361 |
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000827215 |
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0004-6361 000827215 |
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http://hdl.handle.net/10183/99255 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Astronomy and astrophysics. Les Ulis. Vol. 498, no. 2 (May 2009), p. 419-423 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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