1 Introduction

Some years ago, Taylor (1994b) published an [Fe/H] catalog for about 400 class IV-V stars. The input data for the catalog consisted of published values of [Fe/H] derived from weak lines, usually by means of high-dispersion analysis. Those data were corrected to a common temperature scale and (as far as possible) to a common zero point. They were then used to calculate mean values of [Fe/H] and rms errors, with the latter being derived from a statistical analysis.

A second iteration of the catalog appeared in 1995 (see Taylor 1995, hereafter Paper II). For that version, the cutoff date for published values of [Fe/H] was the end of 1993. Numerous high-dispersion metallicities have been published since that time, so an updated version of the catalog is now desirable. The production of that version is described here.

The plan for this paper is as follows. In Sect. 2, the zero-point reliability of the input data for the catalog is considered. The production of the catalog is described in Sect. 3. In Sect. 4, there is a discussion of possible systematic errors which may affect the catalog data and whose status will require clarification in the future. The paper concludes in Sect. 5 with a brief review of the derivation of the catalog and a description of its contents.