On the Use of Field RR Lyrae as Galactic Probes. II. A New ΔS Calibration to Estimate Their Metallicity

(AGENPARL) – GARCHING (GERMANY), ven 16 aprile 2021 First Author: Crestani, J. Instruments: FEROS, HARPS, UVES, XSHOOTER ProgramIDs: 083.C-0244, 67.D-0321, 0100.D-0339, 69.C-0423, 71.C-0097, 076.B-0055, 077.B-0359, 077.D-0633, 079.D-0262, 079.D-0462, 079.D-0567, 082.C-0617, 083.B-0281, 094.B-0409, 095.