Line identifications in the spectrum of $\chi$ Lupi A
R. Monier, T. K{\i}l{\i}\c{c}o\u{g}lu
TL;DR
This paper derives new elemental abundances for the star hi Lupi A using archival spectra and identifies spectral lines of its companion, hi Lupi B, confirming its cooler temperature and normal composition.
Contribution
The study provides updated abundance measurements for hi Lupi A and confirms the spectral characteristics of its companion star using spectral synthesis.
Findings
New abundance determinations for hi Lupi A.
Detection of blue-shifted lines indicating the companion star.
Confirmation that hi Lupi B is a cooler, early A star with normal abundances.
Abstract
We present new abundance determinations for the sharp-lined HgMn star \chi{} Lupi A from archival FEROS spectra. Selected unblended lines with accurate atomic data have been synthesized to derive new abundances for \chi{} Lupi A. These spectra show evidence of the presence of blue-shifted lines of the companion \chi{} Lupi B. The synthesis of the spectrum of \chi{} Lupi B confirms that this star is cooler, probably an early A star with normal abundances.
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Taxonomy
TopicsAstronomical Observations and Instrumentation