Hp 1 : a blue horizontal branch globular cluster in the bulge
dc.contributor.author | Ortolani, Sergio | pt_BR |
dc.contributor.author | Bica, Eduardo Luiz Damiani | pt_BR |
dc.contributor.author | Barbuy, Beatriz | pt_BR |
dc.date.accessioned | 2014-03-21T01:48:50Z | pt_BR |
dc.date.issued | 1997 | pt_BR |
dc.identifier.issn | 0035-8711 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/88732 | pt_BR |
dc.description.abstract | 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. | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society. London. Vol. 284, no. 3 (Jan. 1997), p. 692-698 | pt_BR |
dc.rights | Open Access | en |
dc.subject | Globular clusters: individual: HP 1 | en |
dc.subject | Astrofisica extragalatica | pt_BR |
dc.subject | Estruturas galaticas : Aglomerados globulares : Populacoes estelares : Galaxia | pt_BR |
dc.subject | Galaxy: halo | en |
dc.subject | Galaxy: structure | en |
dc.subject | Fotometria | pt_BR |
dc.title | Hp 1 : a blue horizontal branch globular cluster in the bulge | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 000188531 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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