Line list and abundances of the binary zet2 Ret

The star zet2 Ret hosts a debris disk which was detected by an IR excess and confirmed by direct imaging and numerical simulations, while zet1 Ret does not present IR excess nor planets. We derived differential abundances of 24 different species with equivalent widths and spectral synthesis.

The star zet1 Ret resulted slightly more metal rich than zet2 Ret by 0.02dex, and the relative abundances showed a positive Tc trend. Then, we propose an scenario in which the refractory elements depleted in zet2 Ret are possibly locked-up in the rocky material that orbits this star and produce the debris disk observed around this object.