A STUDY OF THE ATMOSPHERES OF THE SRCREU STARS 17-COM-A AND 21-COM INTHE COMA CLUSTER

Based on new spectroscopic observational material (high-spectral-resol ution CCD spectrograms obtained with the coude spectrograph of the 2.6 -m telescope), we analyze the atmospheres of the two SrCrEu stars 17 C om A and 21 Com in the Coma Cluster by the method of model atmospheres . The measurements of line equivalent widths are used to estimate the abundances of eight elements for the atmospheric parameters of these s tars taken from the Literature by the method of synthetic spectrum. Th e analysis is based on model atmospheres computed with the ATLAS9 prog ram and on atomic constants taken from the VALD database. The new resu lts for the SrCrEu stars lend support to our previous conclusion that the abundance differences in the atmospheres of chemically peculiar st ars belonging to the same cluster are real.