Sodium in the Atmospheres of Thick-Disk Red Giants

Abstract

The parameters and elemental abundances of atmospheres for ten thick-disk red giants was determined from high-resolution spectra by the method of model stellar atmospheres. The results of a comparative analysis of the [Na/Fe] abundances in the atmospheres of the investigated stars and thin disk red giants are presented. Sodium in the atmospheres of thick-disk red giants is shown to have no overabundances typical of thin-disk red giants.

10 pages, 3 figures, published in Astronomical Letters 2013AstL...39...54P

References in corpus (4)

• alpha-, r-, and s-process element trends in the Galactic thin and thick disks
• Non-LTE calculations for neutral Na in late-type stars using improved atomic data
• On the sodium overabundance of giants in open clusters: The case of the Hyades
• Chemical Composition of the Atmospheres of Red Giants with High Space Velocities

Cited by in corpus (5)

• Non-LTE Sodium Abundance in Galactic Thick- and Thin-Disk Red Giants
• Effective Temperature Estimations from Line Depth Ratios in the \H\ and \K-band Spectra of IGRINS
• Evolutionary status of the active star PZ Mon
• Spotted surface structure of the active giant PZ Mon
• Fluorine Abundances in Local Stellar Populations