Observations of field and cluster RR Lyræ with Spitzer. Towards high precision distances with Population II stellar tracers

Massimo Marengo, Jillian Neeley, Giuseppe Bono, Vittorio Braga, Massimo Dall'Ora, Marcella Marconi, Nicolas Trueba, Davide Magurno, M. Catelan, W. Gieren
2017 EPJ Web of Conferences  
We present our project to calibrate the RR Lyrae period-luminosity-metallicity relation using a sample of Galactic calibrators in the halo and globular clusters.
doi:10.1051/epjconf/201715207004 fatcat:s53luu7n3jg3vcbrtpjqjtlt3q