Hp 1 : a blue horizontal branch globular cluster in the bulge

Detalhes bibliográficos
Autor(a) principal: Ortolani, Sergio
Data de Publicação: 1997
Outros Autores: Bica, Eduardo Luiz Damiani, Barbuy, Beatriz
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/88732
Resumo: We present V, I colour-magnitude diagrams of the globular cluster HP 1 obtained at the European Southern Observatory New Technology Telescope under exceptional seeing conditions. The cluster shows blue horizontal branch (HB) and red giant branch morphologies very similar to clusters of intermediate metallicity such as NGC 6752; we therefore estimate [Fe/H] ~~ - 1.5 for HP 1. The blue HB morphology is extended, which is not unusual for a post-core-collapse cluster. We derive a reddening of E (B - V) = 1.19 and a distance d̛ =6.85 kpc. HP 1 might be a halo cluster crossing the bulge or belong to the low-metallicity tail of the bulge.
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spelling Ortolani, SergioBica, Eduardo Luiz DamianiBarbuy, Beatriz2014-03-21T01:48:50Z19970035-8711http://hdl.handle.net/10183/88732000188531We present V, I colour-magnitude diagrams of the globular cluster HP 1 obtained at the European Southern Observatory New Technology Telescope under exceptional seeing conditions. The cluster shows blue horizontal branch (HB) and red giant branch morphologies very similar to clusters of intermediate metallicity such as NGC 6752; we therefore estimate [Fe/H] ~~ - 1.5 for HP 1. The blue HB morphology is extended, which is not unusual for a post-core-collapse cluster. We derive a reddening of E (B - V) = 1.19 and a distance d̛ =6.85 kpc. HP 1 might be a halo cluster crossing the bulge or belong to the low-metallicity tail of the bulge.application/pdfengMonthly Notices of the Royal Astronomical Society. London. Vol. 284, no. 3 (Jan. 1997), p. 692-698Astrofisica extragalaticaEstruturas galaticas : Aglomerados globulares : Populacoes estelares : GalaxiaFotometriaGlobular clusters: individual: HP 1Galaxy: haloGalaxy: structureHp 1 : a blue horizontal branch globular cluster in the bulgeEstrangeiroinfo: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:UFRGSORIGINAL000188531.pdf000188531.pdfTexto completo (inglês)application/pdf727743http://www.lume.ufrgs.br/bitstream/10183/88732/1/000188531.pdf715854cce60940710ea2e57636d2f491MD51TEXT000188531.pdf.txt000188531.pdf.txtExtracted Texttext/plain21239http://www.lume.ufrgs.br/bitstream/10183/88732/2/000188531.pdf.txtcbce7c9fc5f7791ecf872435d67cab47MD52THUMBNAIL000188531.pdf.jpg000188531.pdf.jpgGenerated Thumbnailimage/jpeg2130http://www.lume.ufrgs.br/bitstream/10183/88732/3/000188531.pdf.jpg7ca8a9b346d9eaf7a5f3b35b0e3472f5MD5310183/887322024-04-14 06:46:36.068572oai:www.lume.ufrgs.br:10183/88732Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2024-04-14T09:46:36Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Hp 1 : a blue horizontal branch globular cluster in the bulge
title Hp 1 : a blue horizontal branch globular cluster in the bulge
spellingShingle Hp 1 : a blue horizontal branch globular cluster in the bulge
Ortolani, Sergio
Astrofisica extragalatica
Estruturas galaticas : Aglomerados globulares : Populacoes estelares : Galaxia
Fotometria
Globular clusters: individual: HP 1
Galaxy: halo
Galaxy: structure
title_short Hp 1 : a blue horizontal branch globular cluster in the bulge
title_full Hp 1 : a blue horizontal branch globular cluster in the bulge
title_fullStr Hp 1 : a blue horizontal branch globular cluster in the bulge
title_full_unstemmed Hp 1 : a blue horizontal branch globular cluster in the bulge
title_sort Hp 1 : a blue horizontal branch globular cluster in the bulge
author Ortolani, Sergio
author_facet Ortolani, Sergio
Bica, Eduardo Luiz Damiani
Barbuy, Beatriz
author_role author
author2 Bica, Eduardo Luiz Damiani
Barbuy, Beatriz
author2_role author
author
dc.contributor.author.fl_str_mv Ortolani, Sergio
Bica, Eduardo Luiz Damiani
Barbuy, Beatriz
dc.subject.por.fl_str_mv Astrofisica extragalatica
Estruturas galaticas : Aglomerados globulares : Populacoes estelares : Galaxia
Fotometria
topic Astrofisica extragalatica
Estruturas galaticas : Aglomerados globulares : Populacoes estelares : Galaxia
Fotometria
Globular clusters: individual: HP 1
Galaxy: halo
Galaxy: structure
dc.subject.eng.fl_str_mv Globular clusters: individual: HP 1
Galaxy: halo
Galaxy: structure
description We present V, I colour-magnitude diagrams of the globular cluster HP 1 obtained at the European Southern Observatory New Technology Telescope under exceptional seeing conditions. The cluster shows blue horizontal branch (HB) and red giant branch morphologies very similar to clusters of intermediate metallicity such as NGC 6752; we therefore estimate [Fe/H] ~~ - 1.5 for HP 1. The blue HB morphology is extended, which is not unusual for a post-core-collapse cluster. We derive a reddening of E (B - V) = 1.19 and a distance d̛ =6.85 kpc. HP 1 might be a halo cluster crossing the bulge or belong to the low-metallicity tail of the bulge.
publishDate 1997
dc.date.issued.fl_str_mv 1997
dc.date.accessioned.fl_str_mv 2014-03-21T01:48:50Z
dc.type.driver.fl_str_mv Estrangeiro
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/88732
dc.identifier.issn.pt_BR.fl_str_mv 0035-8711
dc.identifier.nrb.pt_BR.fl_str_mv 000188531
identifier_str_mv 0035-8711
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url http://hdl.handle.net/10183/88732
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv Monthly Notices of the Royal Astronomical Society. London. Vol. 284, no. 3 (Jan. 1997), p. 692-698
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