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Ages of Milky Way Globular Clusters!
hi, i'm just wondering if there has been a catalogue of Milky Way Globular Cluster Ages? I've seen sample populations done spectroscopically but I'm wondering if there is anything like the Harris catalogue including AGES of GC's. In particular, the milky-way ones! Thank you!
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Inappropriate?Hello,
for what I know, there is no comprehensive catalogue of globular clusters age. Maybe the fact is the the age is not a parameter that one can directly derive from observation, but it heavily depend on theoretical framework (maybe age *differences* between clusters are a bit more robust parameters..). Such framework has evolved a lot in recent years; enough to consider that when I was moving my first steps as astronomer, age of globular cluster was indicated aroud 18-20 Gyr, now the average value is around 10 Gyr..!
Hope this helps ;)
Regards,
Marco Castellani
