Elemental Abundances in the Binary Star V505 Per

TL;DR

This study provides a detailed chemical abundance analysis of the binary star V505 Per, revealing elemental compositions and stellar parameters that contribute to understanding lithium depletion in similar stars.

Contribution

First detailed analysis of multiple elemental abundances in V505 Per, refining stellar parameters and contributing to lithium dip studies.

Findings

Effective temperatures: 6650K and 6550K for primary and secondary.

Iron abundances: -0.10 and -0.19 [Fe/H].

Stars lie on the hot edge of the lithium dip.

Abstract

We present a detailed chemical abundance analysis of the eclipsing binary system V505 Per. High resolution spectra were analyzed using the MOOG spectrum analysis code, and we determined abundances not only for iron and lithium but also for Si, Na, Ca, Mn, and Ni, elements that have not previously been analyzed in detail for this system. Abundances were computed across 15 temperature points using model atmospheres, with stellar parameters refined by minimizing abundance trends with excitation potential. We determined effective temperatures of T_eff = 6650 +/- 50 K for the primary and T_eff = 6550 +/- 50 K for the secondary, with iron abundances of [Fe/H] = -0.10 +/- 0.06 and [Fe/H] = -0.19 +/- 0.07, respectively. Most [X/Fe] ratios are consistent with solar values, though manganese is deficient. Our analysis of the effective temperatures shows that both stars lie on the hot edge of the lithium dip, consistent with Koenigsberger et al. (2025), which may help resolve the inconsistency noted of the stars lithium abundance within the dip by Baugh et al. (2013).