Bridge over troubled gas : clusters and associations under the SMC and LMC tidal stresses
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/140442 |
Resumo: | We obtained Southern Astrophysical Research telescope B and V photometry of 14 star clusters and two associations in the Bridge tidal structure connecting the Large and Small Magellanic Cloud (LMC and SMC). These objects are used to study the formation and evolution of star clusters and associations under tidal stresses from the Clouds. Typical star clusters in the Bridge are not richly populated and have in general relatively large diameters (≈30–35 pc), being larger than Galactic counterparts of similar age. Ages and other fundamental parameters are determined with field-star decontaminated photometry. A self-consistent approach is used to derive parameters for the most-populated sample cluster NGC 796 and two young CMD templates built with the remaining Bridge clusters. We find that the clusters are not coeval in the Bridge. They range from approximately a few Myr (still related to optical H II regions and WISE and Spitzer dust emission measurements) to about 100–200 Myr. The derived distance moduli for the Bridge objects (1h56m < α < 2h28m) suggests that the Bridge is a structure connecting the LMC farside in the east to the foreground of the SMC to the west. Most of the present clusters are part of the tidal dwarf candidate D 1, which is associated with an H I overdensity.We find further evidence that the studied part of the Bridge is evolving into a tidal dwarf galaxy, decoupling from the Bridge. |
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Bica, Eduardo Luiz DamianiSantiago, Basilio XavierBonatto, Charles JoseDias, Rafael Augusto GarciaKerber, Leandro de OliveiraDias, Bruno Moreira de SouzaBarbuy, BeatrizBalbinot, Eduardo2016-05-06T02:22:38Z20150035-8711http://hdl.handle.net/10183/140442000985423We obtained Southern Astrophysical Research telescope B and V photometry of 14 star clusters and two associations in the Bridge tidal structure connecting the Large and Small Magellanic Cloud (LMC and SMC). These objects are used to study the formation and evolution of star clusters and associations under tidal stresses from the Clouds. Typical star clusters in the Bridge are not richly populated and have in general relatively large diameters (≈30–35 pc), being larger than Galactic counterparts of similar age. Ages and other fundamental parameters are determined with field-star decontaminated photometry. A self-consistent approach is used to derive parameters for the most-populated sample cluster NGC 796 and two young CMD templates built with the remaining Bridge clusters. We find that the clusters are not coeval in the Bridge. They range from approximately a few Myr (still related to optical H II regions and WISE and Spitzer dust emission measurements) to about 100–200 Myr. The derived distance moduli for the Bridge objects (1h56m < α < 2h28m) suggests that the Bridge is a structure connecting the LMC farside in the east to the foreground of the SMC to the west. Most of the present clusters are part of the tidal dwarf candidate D 1, which is associated with an H I overdensity.We find further evidence that the studied part of the Bridge is evolving into a tidal dwarf galaxy, decoupling from the Bridge.application/pdfengMonthly notices of the Royal Astronomical Society. Oxford. Vol. 453, no. 3 (Nov. 2015), p. 3190-3202Nuvens de magalhaesAglomerados estelaresMagellanic cloudsGalaxies: star clusters: generalGalaxies: structureBridge over troubled gas : clusters and associations under the SMC and LMC tidal stressesEstrangeiroinfo: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:UFRGSORIGINAL000985423.pdf000985423.pdfTexto completo (inglês)application/pdf3766330http://www.lume.ufrgs.br/bitstream/10183/140442/1/000985423.pdf5a782d57ada63adb112bd0945115c9b0MD51TEXT000985423.pdf.txt000985423.pdf.txtExtracted Texttext/plain52945http://www.lume.ufrgs.br/bitstream/10183/140442/2/000985423.pdf.txt5b1258d178ef898271b33105d130c03fMD52THUMBNAIL000985423.pdf.jpg000985423.pdf.jpgGenerated Thumbnailimage/jpeg2112http://www.lume.ufrgs.br/bitstream/10183/140442/3/000985423.pdf.jpg4d24a092b9bc3daa888ca521ecdbdde2MD5310183/1404422023-07-02 03:41:44.958349oai:www.lume.ufrgs.br:10183/140442Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-07-02T06:41:44Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Bridge over troubled gas : clusters and associations under the SMC and LMC tidal stresses |
title |
Bridge over troubled gas : clusters and associations under the SMC and LMC tidal stresses |
spellingShingle |
Bridge over troubled gas : clusters and associations under the SMC and LMC tidal stresses Bica, Eduardo Luiz Damiani Nuvens de magalhaes Aglomerados estelares Magellanic clouds Galaxies: star clusters: general Galaxies: structure |
title_short |
Bridge over troubled gas : clusters and associations under the SMC and LMC tidal stresses |
title_full |
Bridge over troubled gas : clusters and associations under the SMC and LMC tidal stresses |
title_fullStr |
Bridge over troubled gas : clusters and associations under the SMC and LMC tidal stresses |
title_full_unstemmed |
Bridge over troubled gas : clusters and associations under the SMC and LMC tidal stresses |
title_sort |
Bridge over troubled gas : clusters and associations under the SMC and LMC tidal stresses |
author |
Bica, Eduardo Luiz Damiani |
author_facet |
Bica, Eduardo Luiz Damiani Santiago, Basilio Xavier Bonatto, Charles Jose Dias, Rafael Augusto Garcia Kerber, Leandro de Oliveira Dias, Bruno Moreira de Souza Barbuy, Beatriz Balbinot, Eduardo |
author_role |
author |
author2 |
Santiago, Basilio Xavier Bonatto, Charles Jose Dias, Rafael Augusto Garcia Kerber, Leandro de Oliveira Dias, Bruno Moreira de Souza Barbuy, Beatriz Balbinot, Eduardo |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Bica, Eduardo Luiz Damiani Santiago, Basilio Xavier Bonatto, Charles Jose Dias, Rafael Augusto Garcia Kerber, Leandro de Oliveira Dias, Bruno Moreira de Souza Barbuy, Beatriz Balbinot, Eduardo |
dc.subject.por.fl_str_mv |
Nuvens de magalhaes Aglomerados estelares |
topic |
Nuvens de magalhaes Aglomerados estelares Magellanic clouds Galaxies: star clusters: general Galaxies: structure |
dc.subject.eng.fl_str_mv |
Magellanic clouds Galaxies: star clusters: general Galaxies: structure |
description |
We obtained Southern Astrophysical Research telescope B and V photometry of 14 star clusters and two associations in the Bridge tidal structure connecting the Large and Small Magellanic Cloud (LMC and SMC). These objects are used to study the formation and evolution of star clusters and associations under tidal stresses from the Clouds. Typical star clusters in the Bridge are not richly populated and have in general relatively large diameters (≈30–35 pc), being larger than Galactic counterparts of similar age. Ages and other fundamental parameters are determined with field-star decontaminated photometry. A self-consistent approach is used to derive parameters for the most-populated sample cluster NGC 796 and two young CMD templates built with the remaining Bridge clusters. We find that the clusters are not coeval in the Bridge. They range from approximately a few Myr (still related to optical H II regions and WISE and Spitzer dust emission measurements) to about 100–200 Myr. The derived distance moduli for the Bridge objects (1h56m < α < 2h28m) suggests that the Bridge is a structure connecting the LMC farside in the east to the foreground of the SMC to the west. Most of the present clusters are part of the tidal dwarf candidate D 1, which is associated with an H I overdensity.We find further evidence that the studied part of the Bridge is evolving into a tidal dwarf galaxy, decoupling from the Bridge. |
publishDate |
2015 |
dc.date.issued.fl_str_mv |
2015 |
dc.date.accessioned.fl_str_mv |
2016-05-06T02:22:38Z |
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http://hdl.handle.net/10183/140442 |
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. 453, no. 3 (Nov. 2015), p. 3190-3202 |
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openAccess |
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