Impact of Distance Determinations on Galactic Structure. II. Old Tracers

Andrea Kunder, Elena Valenti, Massimo Dall’Ora, Pawel Pietrukowicz, Chris Sneden, Giuseppe Bono, Vittorio F. Braga, Ivan Ferraro, Giuliana Fiorentino, Giacinto Iannicola, Marcella Marconi, Clara E. Martínez-Vázquez, Matteo Monelli, Ilaria Musella, Vincenzo Ripepi, Maurizio Salaris, Peter B. Stetson

Research output: Contribution to journalReview articlepeer-review

9 Citations (Scopus)


Here we review the efforts of a number of recent results that use old tracers to understand the build up of the Galaxy. Details that lead directly to using these old tracers to measure distances are discussed. We concentrate on the following: (1) the structure and evolution of the Galactic bulge and inner Galaxy constrained from the dynamics of individual stars residing therein; (2) the spatial structure of the old Galactic bulge through photometric observations of RR Lyrae-type stars; (3) the three-dimensional structure, stellar density, mass, chemical composition, and age of the Milky Way bulge as traced by its old stellar populations; (4) an overview of RR Lyrae stars known in the ultra-faint dwarfs and their relation to the Galactic halo; and (5) different approaches for estimating absolute and relative cluster ages.

Original languageEnglish
Article number90
JournalSpace Science Reviews
Issue number5
Publication statusPublished - 1 Aug 2018


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ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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