Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26as...65...63g&link_type=abstract
Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 65, no. 1, July 1986, p. 63-77.
Astronomy and Astrophysics
Astrophysics
14
Charge Coupled Devices, Globular Clusters, Main Sequence Stars, Stellar Spectrophotometry, Data Reduction, Error Analysis, Stellar Evolution
Scientific paper
CCD photometry for the globular clusters NGC 1904 (M79), NGC 2298 and
NGC 2808 is presented. Turn off points are detected in all clusters. A
preliminary comparison with theoretical isochrones shows that the
cluster ages are of the order of 18 Gyr using VandenBerg isochrones.
Gratton Raffaele G.
Ortolani Sergio
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