SIMBAD references

2020AJ....159....9H - Astron. J., 159, 9-9 (2020/January-0)

HD 150382: a lithium-rich star at the early-AGB stage?

HOLANDA N., DRAKE N.A. and PEREIRA C.B.

Abstract (from CDS):

We report the discovery of a lithium-rich giant, HD 150382, a post-red-giant-branch clump star. The atmospheric parameters, the chemical abundances for 17 elements, and the isotopic ratio 12C/13C were determined using the equivalent width and the spectral synthesis methods. The lithium abundance was determined via spectral synthesis of the Li I resonance doublet at λ 6708 yielding log ε(Li)NLTE = 2.55. The excited-state line at λ 6104 also was analyzed. In addition, we have used theoretical evolutionary tracks to determine the mass and luminosity of HD 150382 and compare it with other well-known lithium-rich giants in the literature. Our results show that HD 150382 is a slowly rotating K-giant star having near-solar metallicity. We also show that HD 150382 is not s-process enriched, which is in agreement with its evolutionary status. Finally, based on the abundance results, we study the possible scenarios of the lithium enrichment.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): Lithium stars - Chemically peculiar stars - A giant stars - Asymptotic giant branch stars - High resolution spectroscopy

VizieR on-line data: <Available at CDS (J/AJ/159/9): table5.dat table6.dat>

Simbad objects: 86

goto Full paper

goto View the references in ADS

To bookmark this query, right click on this link: simbad:2020AJ....159....9H and select 'bookmark this link' or equivalent in the popup menu