The age of the Milky Way inner stellar spheroid from RR Lyrae population synthesis

@article{Savino2020TheAO,
  title={The age of the Milky Way inner stellar spheroid from RR Lyrae population synthesis},
  author={Alessandro Savino and Andreas Koch and Z. Prudil and Andrea M. Kunder and Radosław Smolec},
  journal={Astronomy \& Astrophysics},
  year={2020}
}
The central kiloparsecs of the Milky Way are known to host an old, spheroidal stellar population, whose spatial and kinematical properties set it apart from the boxy-peanut structure that constitutes most of the central stellar mass. The nature of this spheroidal population, whether it is a small classical bulge, the innermost stellar halo, or a population of disk stars with large initial velocity dispersion, remains unclear. This structure is also a promising candidate to play host to some of… 

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