A search for chemical anomalies of seven A-type stars

We present a chemical abundance analysis of seven A-type stars with no detailed measurements in the literature. High-resolution spectra targets HD 2924, 4321, 26553, 125658, 137928, 154713, and 159834 were obtained using Coude Echelle Spectrograph at TUBITAK National Observatory. determined atmospheric abundances samples measured elemental C, N, O, Na, Mg, Al, Si, S, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Sr, Y, Zr, Ba, La, Ce, Nd, Sm, Eu, Gd. The masses estimated based on their evolutionary tracks, ages calculated isochrones. also radii stars. patterns 154713 found to be agreement those classical Am stars, underabundant Ca overabundant heavier elements, moderate overabundance iron-peak elements. that 137928 have similar characteristics marginal Am-type distributions 2924 26553 are consistent pattern normal iron, nickel, zinc 125658 significantly higher than other These values suggest they among most metal-rich