Relative Ages of Nine Inner Milky Way Globular Clusters from Proper-motion-cleaned Color–Magnitude Diagrams

  title={Relative Ages of Nine Inner Milky Way Globular Clusters from Proper-motion-cleaned Color–Magnitude Diagrams},
  author={Roger E. Cohen and Andrea Bellini and Luca Casagrande and Thomas M. Brown and Matteo Correnti and Jason S. Kalirai},
  journal={The Astronomical Journal},
  • Roger E. Cohen, A. Bellini, +3 authors J. Kalirai
  • Published 17 September 2021
  • Physics
  • The Astronomical Journal
Our picture of the age–metallicity relation for Milky Way globular clusters (MWGCs) is still highly incomplete, and the majority of MWGCs lack self-consistent age measurements. Here, we exploit deep, homogenous multiepoch Hubble Space Telescope imaging of nine MWGCs located toward the inner Milky Way to measure their relative ages, in most cases for the first time. Our relative age measurements are designed to be directly comparable to the large set of MWGC ages presented by VandenBerg et al… Expand


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