COMPOSITIONAL DIFFERENCES AMONG THE A-TYPE STARS .1. 6 NARROW-LINED STARS

We have determined abundances of up to 18 chemical elements using spec trum synthesis for half a dozen narrow-lined A-type stars. Except for Sirius (a hot Am star) and perhaps o Peg all are classified as normal. Our results agree fairly well with those in the literature obtained u sing more traditional techniques. Considerable star-to-star abundance variations are present, even among the apparently normal stars. The ab undance of iron varies over a range of about 0.7 dex and the abundance s of most elements seem to vary at least roughly with those of iron. O ur results are consistent with an approximately constant helium undera bundance with respect to the Sun for all six stars; carbon exhibits an anti-correlation with iron.