Abundances of Vanadium and Bromine in 3 Cen A: Additional Odd-Z Anomalies

TL;DR

This paper reports new abundance measurements of vanadium and bromine in the star 3 Cen A, supporting the diffusion theory for chemical peculiarities in such stars.

Contribution

It provides the first reported abundances of vanadium and bromine in 3 Cen A, adding evidence to the diffusion-based explanation of abundance anomalies.

Findings

Vanadium abundance excess of 1.2 dex

Bromine abundance excess of 2.6 dex

Supports diffusion as the cause of chemical peculiarities

Abstract

We report abundance excesses of 1.2 and 2.6 dex, respectively, for vanadium and bromine in the hot, peculiar star 3 Cen A. Abundances for these two odd-Z elements have not been previously reported for this star. Taken with previous work, they strengthen the case of the origin of the abundance peculiarities by diffusion.