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2024RNAAS...8..315F - Research Notes of the AAS, 8, 315 (2024/December-0)

An Exploration of Molecular Lines for Abundance Analysis in M-dwarf IR Spectra.

FLORES I., MAAS Z.G. and HINKEL N.R.

Abstract (from CDS):

We identified detectable molecular absorption lines and estimated the abundances of carbon (C), aluminum (Al), chlorine (Cl) and chromium (Cr) in an M dwarf star with Teff ∼ 3100 K. We chose a well-studied M-dwarf, HD 125455B, since this star is in a binary pair with K-type star, HD 125455. Abundance analysis was conducted using a high-resolution H-band spectrum from IGRINS. We identified CO lines to test the methodology and identified detectable AlO, HCl, and CrH lines in the IR H-band. We determined upper limits for stellar abundances for [C/H], [Al/H], [Cl/H], and [Cr/H] in HD 125455B and we provided a comparison to known abundances for HD 125455.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): M dwarf stars - Chemical abundances

Simbad objects: 2

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