15 Vul, an evolved Am star, abundances

In this study, we presented a detailed abundance analysis of 15 Vul (HD 189849), identified as a marginal star, using a combination of equivalent width and spectrum synthesis techniques, under the LTE assumption. We compared our findings to previous analyses of the star, providing critique on both their results and our own.

Our results suggest that although 15 Vul exhibits some underabundances of calcium and scandium, which are typically associated with stars, it might be more accurately identified as a normal A star in terms of its abundance pattern of all other elements and microturbulence velocity. The stars position on the HR diagram, along with our findings, may indicate that it is potentially a classical star that has evolved into the subgiant phase as a quasi-normal star.