High quality seeing V, I and Gunn z imaging of Terzan 4 : a blue horizontal branch bulge globular cluster
Autor(a) principal: | |
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Data de Publicação: | 1997 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/98384 |
Resumo: | We study the globular cluster Terzan 4 projected close to the Galactic center, by means of V, I and Gunn z Colour-Magnitude Diagrams. The images were obtained under exceptional seeing conditions (0.35" - 0.55") at the ESO New Technology Telescope equipped with SUSI. We derive a reddening of E(B-V) = 2.35 amd a distance from the Sun dΘ = 8.3 kpc for Terzan 4. From the similarity of the VI Colour-Magnitude Diagrams of Terzan 4 and M30, in particular the presence of a blue horizontal branch, it could be as metal-poor as [Fe/H] ≈ -2.0. It is therefore another blue horizontal branch globular cluster located close to the Galactic center. |
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Ortolani, SergioBarbuy, BeatrizBica, Eduardo Luiz Damiani2014-07-23T02:04:37Z19970004-6361http://hdl.handle.net/10183/98384000157707We study the globular cluster Terzan 4 projected close to the Galactic center, by means of V, I and Gunn z Colour-Magnitude Diagrams. The images were obtained under exceptional seeing conditions (0.35" - 0.55") at the ESO New Technology Telescope equipped with SUSI. We derive a reddening of E(B-V) = 2.35 amd a distance from the Sun dΘ = 8.3 kpc for Terzan 4. From the similarity of the VI Colour-Magnitude Diagrams of Terzan 4 and M30, in particular the presence of a blue horizontal branch, it could be as metal-poor as [Fe/H] ≈ -2.0. It is therefore another blue horizontal branch globular cluster located close to the Galactic center.application/pdfengAstronomy and Astrophysics. Berlin. Vol. 319, no. 3 (Mar. 1997), p. 850-854Astrofisica extragalaticaAglomerados globularesGlobular clusters: individual: Terzan 4;M 30; generalHR diagramGalaxy: centerHigh quality seeing V, I and Gunn z imaging of Terzan 4 : a blue horizontal branch bulge globular clusterEstrangeiroinfo: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:UFRGSORIGINAL000157707.pdf000157707.pdfTexto completo (inglês)application/pdf488980http://www.lume.ufrgs.br/bitstream/10183/98384/1/000157707.pdf372bd24ba736a4d02011319d13e741c9MD51TEXT000157707.pdf.txt000157707.pdf.txtExtracted Texttext/plain13737http://www.lume.ufrgs.br/bitstream/10183/98384/2/000157707.pdf.txt1d240bab02c1c4635a53cacdc1ea8b96MD52THUMBNAIL000157707.pdf.jpg000157707.pdf.jpgGenerated Thumbnailimage/jpeg2043http://www.lume.ufrgs.br/bitstream/10183/98384/3/000157707.pdf.jpg4b570a9e82fed8f1c303d942d32c732fMD5310183/983842024-04-14 06:46:28.633763oai:www.lume.ufrgs.br:10183/98384Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2024-04-14T09:46:28Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
High quality seeing V, I and Gunn z imaging of Terzan 4 : a blue horizontal branch bulge globular cluster |
title |
High quality seeing V, I and Gunn z imaging of Terzan 4 : a blue horizontal branch bulge globular cluster |
spellingShingle |
High quality seeing V, I and Gunn z imaging of Terzan 4 : a blue horizontal branch bulge globular cluster Ortolani, Sergio Astrofisica extragalatica Aglomerados globulares Globular clusters: individual: Terzan 4;M 30; general HR diagram Galaxy: center |
title_short |
High quality seeing V, I and Gunn z imaging of Terzan 4 : a blue horizontal branch bulge globular cluster |
title_full |
High quality seeing V, I and Gunn z imaging of Terzan 4 : a blue horizontal branch bulge globular cluster |
title_fullStr |
High quality seeing V, I and Gunn z imaging of Terzan 4 : a blue horizontal branch bulge globular cluster |
title_full_unstemmed |
High quality seeing V, I and Gunn z imaging of Terzan 4 : a blue horizontal branch bulge globular cluster |
title_sort |
High quality seeing V, I and Gunn z imaging of Terzan 4 : a blue horizontal branch bulge globular cluster |
author |
Ortolani, Sergio |
author_facet |
Ortolani, Sergio Barbuy, Beatriz Bica, Eduardo Luiz Damiani |
author_role |
author |
author2 |
Barbuy, Beatriz Bica, Eduardo Luiz Damiani |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Ortolani, Sergio Barbuy, Beatriz Bica, Eduardo Luiz Damiani |
dc.subject.por.fl_str_mv |
Astrofisica extragalatica Aglomerados globulares |
topic |
Astrofisica extragalatica Aglomerados globulares Globular clusters: individual: Terzan 4;M 30; general HR diagram Galaxy: center |
dc.subject.eng.fl_str_mv |
Globular clusters: individual: Terzan 4;M 30; general HR diagram Galaxy: center |
description |
We study the globular cluster Terzan 4 projected close to the Galactic center, by means of V, I and Gunn z Colour-Magnitude Diagrams. The images were obtained under exceptional seeing conditions (0.35" - 0.55") at the ESO New Technology Telescope equipped with SUSI. We derive a reddening of E(B-V) = 2.35 amd a distance from the Sun dΘ = 8.3 kpc for Terzan 4. From the similarity of the VI Colour-Magnitude Diagrams of Terzan 4 and M30, in particular the presence of a blue horizontal branch, it could be as metal-poor as [Fe/H] ≈ -2.0. It is therefore another blue horizontal branch globular cluster located close to the Galactic center. |
publishDate |
1997 |
dc.date.issued.fl_str_mv |
1997 |
dc.date.accessioned.fl_str_mv |
2014-07-23T02:04:37Z |
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/10183/98384 |
dc.identifier.issn.pt_BR.fl_str_mv |
0004-6361 |
dc.identifier.nrb.pt_BR.fl_str_mv |
000157707 |
identifier_str_mv |
0004-6361 000157707 |
url |
http://hdl.handle.net/10183/98384 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Astronomy and Astrophysics. Berlin. Vol. 319, no. 3 (Mar. 1997), p. 850-854 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
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Repositório Institucional da UFRGS |
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