Abstract
view Abstract Citations (90) References (70) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Evidence for an Age Spread among the Galactic Globular Clusters Sarajedini, Ata ; King, Christopher R. Abstract The ages of the Galactic globular clusters are studied, based on a new interpretation of the observed Delta(V) and Fe/H abundance ratio values in terms of a parameterized model. The derived ages are in excellent agreement with those derived from isochrone fitting. Evidence is presented for an age spread of 5 Gyr, suggesting a prolonged epoch of globular cluster formation. It is found that younger clusters have high metallicity. The results suggest that the variations in age describe the observed variation in horizontal-branch morphology in Galactic clusters at a given metallicity. Publication: The Astronomical Journal Pub Date: November 1989 DOI: 10.1086/115246 Bibcode: 1989AJ.....98.1624S Keywords: Chronology; Galactic Clusters; Galactic Evolution; Globular Clusters; Milky Way Galaxy; Astronomical Models; Horizontal Branch Stars; Luminosity; Astrophysics; CLUSTERS: GLOBULAR; GALAXIES: THE GALAXY full text sources ADS | data products SIMBAD (30)
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