1995/02/01 by R. Buonanno, C. E. Corsi, L. Pulone +3 · 1 citation
Physics and Astronomy · #Astro and Planetary Science #Advanced Chemical Physics Studies #Planetary Science and Exploration
paper · doi:10.1086/117309
openalex publication_date 1995/02/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/11
The first extensive CCD color-magnitude diagram (CMD) for the metal-rich galactic globular cluster Terzan 7 is presented. All age indicators derived from this diagram suggest that the cluster is young, about 70% of the age of 47 Tuc, which has similar metallicity. A rich population of blue straggler stars is also found in this cluster. With Terzan 7, the anomaly of young globular clusters is thus extended to cover almost the entire range of galactic globular cluster metallicities. Several possibilities for the origin of young galactic globular clusters are discussed.