Can I read The Relative Ages of Galactic Globular Clusters on EtoBox?

The Relative Ages of Galactic Globular Clusters by Stetson, Peter B.; VandenBerg, Don A.; Bolte, Michael is a scholarly article available to read on EtoBox.

What is The Relative Ages of Galactic Globular Clusters about?

We discuss the present state of knowledge and thought concerning the spread in age found among Galactic globular clusters, with some discussion of the implications for what happened during the earliest stages of the formation of the Milky Way Galaxy. Differential observational techniques to derive the relative age differences among clusters of similar metallicity are discussed in detail. We conclude that as of the current date (mid-April 1996) the state of the field is still somewhat muddled. However, we believe that there is now a substantial body of evidence --- including a particularly revealing intercomparison of the color-magnitude diagrams of \ngc{1851}, \ngc{288}, and \ngc{362} presented here --- indicating that age is {\it not\/} the dominant second parameter determining the shape of globular clusters' horizontal branches. If our assertion is correct, then apart from a handful of anomalous clusters that may well have been captured from a satellite dwarf galaxy, there is no strong evidence either for a significant spread in age among clusters of a given metal abundance or for a systematic variation of mean age with Galactocentric distance. On the question of whether there is

Author

Stetson, Peter B.; VandenBerg, Don A.; Bolte, Michael

Published

1996

Language

EN