Chemical analysis of early-type stars with planets

Several studies in the literature study the chemical composition of sun-like FGK stars with and without planets, while early-type stars are comparatively poorly studied. In this work, we present some preliminary results of the chemical pattern found in a sample of early-type stars (mostly A spectral types) with and without planets. One of the aims of the present work consists of analyzing the possible relationship between the presence of planets and the refractory-poor lambda Bootis stars. We also want to test a hypothesis proposed in the literature, in which the winds from a near hot-Jupiter planet could produce the accretion of volatile elements on the atmosphere of these early-type stars.