HP 1: a blue horizontal branch globular cluster in the bulge | Zendy

S. Ortolani | Zendy; E. Bica | Zendy; B. Barbuy | Zendy

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

Author(s) -

S. Ortolani,

E. Bica,

B. Barbuy

Publication year - 1997

Publication title -

monthly notices of the royal astronomical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.058

H-Index - 383

eISSN - 1365-8711

pISSN - 0035-8711

DOI - 10.1093/mnras/284.3.692

Subject(s) - globular cluster , physics , horizontal branch , bulge , astrophysics , metallicity , cluster (spacecraft) , halo , red giant branch , observatory , blue straggler , astronomy , galaxy , computer science , programming language

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 ...

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