High quality seeing V, I and Gunn z imaging of Terzan 4 : a blue horizontal branch bulge globular cluster

Detalhes bibliográficos
Autor(a) principal: Ortolani, Sergio
Data de Publicação: 1997
Outros Autores: Barbuy, Beatriz, Bica, Eduardo Luiz Damiani
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.
id UFRGS-2_ff0cef85eb1913c67cfe7056a13c0804
oai_identifier_str oai:www.lume.ufrgs.br:10183/98384
network_acronym_str UFRGS-2
network_name_str Repositório Institucional da UFRGS
repository_id_str
spelling 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
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/10183/98384/1/000157707.pdf
http://www.lume.ufrgs.br/bitstream/10183/98384/2/000157707.pdf.txt
http://www.lume.ufrgs.br/bitstream/10183/98384/3/000157707.pdf.jpg
bitstream.checksum.fl_str_mv 372bd24ba736a4d02011319d13e741c9
1d240bab02c1c4635a53cacdc1ea8b96
4b570a9e82fed8f1c303d942d32c732f
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_ 1801224840694202368

Registros relacionados