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Spectroscopic iron-to-hydrogen ratios, radial velocities, atmosphericparameters, and new photometric analyses are presented for 41 RR Lyrae stars(and one probable high-amplitude delta Scuti star) located in the field-of-viewof the Kepler space telescope. Thirty-seven of the RR Lyrae stars arefundamental-mode pulsators (i.e., RRab stars) of which 16 exhibit the Blazhkoeffect. Four of the stars are multiperiodic RRc pulsators oscillating primarilyin the first-overtone mode. Spectroscopic [Fe/H] values for the 34 stars forwhich we were able to derive estimates range from -2.54 +/- 0.13 (NR Lyr) to-0.05 +/- 0.13 dex (V784 Cyg), and for the 19 Kepler-field non-Blazhko starsstudied by Nemec et al.(2011) the abundances agree will with their photometric[Fe/H] values. Four non-Blazhko RR Lyrae stars that they identified asmetal-rich (KIC 6100702, V2470 Cyg, V782 Cyg and V784 Cyg) are confirmed assuch, and four additional stars (V839 Cyg, KIC 5520878, KIC 8832417, KIC3868420) are also shown here to be metal-rich. Five of the non-Blazhko RRabstars are found to be more metal-rich than [Fe/H] -0.9 dex while all of the 16Blazhko stars are more metal-poor than this value. New period-phi31s-[Fe/H]relationships are derived based on ~970 days of quasi-continuous high-precisonQ0-Q11 long- and short-cadence Kepler photometry. With the exception of someBlazhko stars, the spectroscopic and photometric [Fe/H] values are in goodagreement. Several stars with unique photometric characteristics areidentified, including a Blazhko variable with the smallest known amplitude andfrequency modulations (V838 Cyg).

Metal Abundances, Radial Velocities and other Physical Characteristics for the RR Lyrae Stars in the Kepler Field