The HST/ACS Survey of Galactic Globular Clusters: Absolute Ages of Selected Clusters
The HST/ACS GGC Survey provides reliable photometry from 6 magnitudes below the main sequence turn-off to the level of the horizontal branch ( 3.5 magnitudes brighter than the turn-off) for 65 Galactic globular clusters. The absolute ages of a sub-sample of those clusters, which have low reddenings and well determined chemical compositions, have
Reid, Iain N. et al.
Fecha de publicación:
12
2006