1 Introduction

The problem of deriving metallicities for large numbers of cool stars continues to deserve attention. Many such stars have not been analyzed at high dispersion, while others have high-dispersion (H-D) results whose precision is low or whose accuracy may be questioned. Because low-resolution (L-R) data are often available, they are an obvious choice to fill these gaps. To make use of these data, accurate calibrations are required.

This paper presents new L-R calibrations that will be used to study the supermetallicity problem in K giants [42, (see Taylor 1999c]) and the metallicities of moving groups. The calibrations are based on two catalogs of mean H-D values of [Fe/H] for evolved stars. Each catalog is based on results published by diverse authors, and its entries are on a uniform zero point and include rms errors. One of the catalogs is for dwarfs, and is given by [36, Taylor (1995]). The other catalog is for evolved stars, and is described by [40, Taylor (1999a]). Derivations of the catalogs are described by [35, Taylor (1994]) and [41, Taylor (1999b]), respectively.

In Sect. 2 of this paper, there is a discussion of the L-R indices that are considered for calibration. The derivation of the new calibrations is considered in Sect. 3. The calibrations themselves are presented and discussed in Sect. 4. A brief summary in Sect. 5 concludes the paper.