DOI

In this work we analysed, using high-resolution spectroscopy, a sample of 12 single and 4 spectroscopic binary stars of the open cluster NGC 2447. For the single stars, we obtained atmospheric parameters and chemical abundances of Li, C, N, O, Na, Mg, Al, Ca, Si, Ti, Ni, Cr, Y, Zr, La, Ce, Nd, Eu. Rotational velocities were obtained for all the stars. The abundances of the light elements and Eu and the rotational velocities were derived using spectral synthesis technique. We obtained a mean metallicity of [Fe/H] = -0.17 ± 0.05. We found that the abundances of all elements are similar to field giants and/or giants of open clusters, even for the s-process elements, which are enhanced as in other young open clusters. We show that the spectroscopic binaries NGC 2447-26, 38, and 42 are yellow-straggler stars, of which the primary is a giant star and the secondary a main-sequence A-type star.

Translated title of the contributionКрасные гиганты и желтые страглеры в молодом рассеянном скоплении NGC 2447
Original languageEnglish
Pages (from-to)4907-4931
Number of pages25
JournalMonthly Notices of the Royal Astronomical Society
Volume476
Issue number4
DOIs
StatePublished - 1 Jun 2018

    Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

    Research areas

  • Open clusters and associations: individual: NGC 2447, Stars: abundances, Stars: evolution, Stars: fundamental parameters, open clusters and associations: individual: NGC 2447, stars: evolution, GALACTIC DISK, LITHIUM ABUNDANCES, METAL-POOR STARS, COMPREHENSIVE ABUNDANCE ANALYSIS, stars: abundances, NEUTRON-CAPTURE ELEMENTS, CHEMICAL-COMPOSITION, ISOTOPE RATIOS, MODEL ATMOSPHERES, stars: fundamental parameters, LABORATORY TRANSITION-PROBABILITIES, RADIAL-VELOCITIES

ID: 33797457