[ascl:2312.029]
RRLFE: Metallicity calibrations for RR Lyrae variable stars
Spalding, Eckhart;
Wilhelm, Ronald;
De Lee, Nathan;
Long, Stacy;
Beers, Timothy C.;
Placco, Vinicius M.;
Kielkopf, John;
Lee, Young Sun;
Pepper, Joshua;
Carrell, Kenneth
RRLFE generates and applies calibrations for retrieving [Fe/H] from low-res spectra of RR Lyrae variable stars. The code can generate a metallicity calibration anew, from real or synthetic spectra; it can also apply a metallicity calibration to low-resolution (R ~2000) RR Lyrae spectra spanning 3911 to 4950 angstroms.