Star formation history of the Galactic bulge from deep HST imaging of low reddening windows

@article{Bernard2018StarFH,
  title={Star formation history of the Galactic bulge from deep HST imaging of low reddening windows},
  author={Edouard J. Bernard and Mathias Schultheis and P. Di Matteo and Vanessa Hill and M. Haywood and Annalisa Calamida},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2018},
  volume={477},
  pages={3507-3519}
}
Despite the huge amount of photometric and spectroscopic efforts targetting the Galactic bulge over the past few years, its age distribution remains controversial owing to both the complexity of determining the age of individual stars and the difficult observing conditions. Taking advantage of the recent release of very deep, proper-motion-cleaned colour--magnitude diagrams (CMDs) of four low reddening windows obtained with the Hubble Space Telescope (HST), we used the CMD-fitting technique to… 
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