publication . Article . Preprint . 2000

The age of the inner halo globular cluster NGC 6652

Brian Chaboyer; Sarajedini, A.; Armandroff, T. E.;
  • Published: 28 Aug 2000
Abstract
HST (V,I) photometry has been obtained for the inner halo globular cluster NGC 6652. The photometry reaches approximately 4 mag below the turn-off and includes a well populated horizontal branch. This cluster is located close to the Galactic center at a galactocentric distance of approximately 2.0 kpc with a reddening of E(V-I) = 0.15 +/- 0.02 and has a metallicity of [Fe/H] approximately -0.85. Based upon Delta(V) between the point on the sub-giant branch which is 0.05 mag redder than the turn-off and the horizontal branch, NGC 6652 is 11.7 +/- 1.6 Gyr old. Using this same Delta(V), precise differential ages for 47 Tuc (a thick disk globular), M107 and NGC 1851...
Subjects
free text keywords: Astrophysics, Space and Planetary Science, Astronomy and Astrophysics, Galactic Center, Globular cluster, Hubble sequence, symbols.namesake, symbols, Metallicity, Halo, Galaxy formation and evolution, Horizontal branch, Physics, Astronomy, Thick disk
Related Organizations

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publication . Article . Preprint . 2000

The age of the inner halo globular cluster NGC 6652

Brian Chaboyer; Sarajedini, A.; Armandroff, T. E.;