High-resolution spectroscopy of red giants and ‘yellow stragglers’ in the southern open cluster NGC 2539

Cintia F Martinez,N Holanda,C B Pereira,N A Drake

Monthly Notices of the Royal Astronomical Society（2020）

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摘要

We present a detailed high-resolution spectroscopic analysis of 12 red giant stars, in single and binaries or multiples systems, classified as members of the intermediate-age (631 Myr) open cluster NGC 2539. We used FEROS echelle spectra and the standard LTE analysis to derive the atmospheric parameters for the stars and the abundance ratios of light elements (Li, C, N), light odd-Z elements (Na, ...

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关键词

techniques: spectroscopic,stars: abundances,stars: fundamental parameters,open clusters and associations: individual: NGC 2539

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