3 papers
astro-ph.SR2025
A Near-Infrared and Optical Study of NGC 5822: An Open Cluster Hosting Barium-stars and Lithium-Enriched Giant Stars
N. Holanda, V. Loaiza-Tacuri, A. Sonally +7
We present a chemical abundance study of giant stars in the Galactic open cluster NGC 5822, which hosts two barium stars (#002 and #201) and three lithium-enriched giants (#006, #1…
astro-ph.SR2025
Exploring giant barium stars: ratio and elemental abundances of carbon, nitrogen, and oxygen
M. P. Roriz, N. A. Drake, N. Holanda +4
Barium (Ba) stars belong to binary systems that underwent mass transfer events. As a consequence, their envelopes were enriched with material synthesized in the interiors of their…
astro-ph.GA2025
Open cluster members in APOGEE DR17 I. Dynamics and star members
R. Guerço, D. Souto, J. G. Fernández-Trincado +7
Context. Open clusters (OCs) are groups of stars formed from the same cloud of gas and cosmic dust. They play an important role in studies of star formation and evolution and our u…