A new age-metallicity relation for Galactic globular clusters in the alpha-enhanced scenario - Cosmological implications

Details A new age-metallicity relation for Galactic globular clusters in the alpha-enhanced scenario - Cosmological implications A new age-metallicity relation for Galactic globular clusters in the alpha-enhanced scenario - Cosmological implications

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...258l...5c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 258, no. 2, p. L5-L8.

Astronomy and Astrophysics

Astrophysics

4

Cosmology, Galactic Halos, Globular Clusters, Horizontal Branch Stars, Metallicity, Milky Way Galaxy, Stellar Magnitude, Stellar Systems, Universe

Scientific paper

Results of an exploratory analysis of the suggestion of Straniero (1991) to obtain, through the Delta(V) method, an age-metallicity for Galactic globular clusters in the alpha-enhanced scenario are presented. A new lower limit is derived for the age of the universe (about 17 Gyr). This value is discussed in the light of other observational constraints in the Hubble parameter-density parameter plane.

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