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2025RNAAS...9..250M - Research Notes of the AAS, 9, 250 (2025/September-0)

Determination of the Abundances of the HgMn Star HD 53244 (γ CMa).

MONIER R.

Abstract (from CDS):

The weak line of Hg II located at 5677.10 Å is not detected in a series of ESPaDOnS I profiles of the bright HgMn star HD 53244. Line synthesis is used to measure the abundances of twenty elements. The following excesses/deficiencies are found: helium (-1.00 dex), carbon (-0.70), oxygen (-0.30), neon (+2.70), magnesium (-0.60), silicon (-0.30), phosphorus (+1.60), titanium (+0.54), chromium (+0.15), manganese (+1.73), iron (-0.30), gallium (0.00), strontium (0.00), ytrium (0.00), zirconium (0.00), xenon (+2.70), baryum (0.00), praseodymium (+2.23) and mercury (+3.81). A conservative uncertainty on the excesses/deficiencies is estimated to be ±0.10 dex.

Abstract Copyright: © 2025. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Chemically peculiar stars - Mercury-manganese stars

Simbad objects: 2

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