Elemental abundances in the Galactic bulge from microlensed dwarf stars

T. Bensby; S. Feltzing; J. A. Johnson; A. Gould; H. Sana; A. Gal-Yam; M. Asplund; S. Lucatello; J. Melendez; A. Udalski; D. Kubas; G. James; D. Adén; J. Simmerer

doi:10.1017/S1743921310000852

Elemental abundances in the Galactic bulge from microlensed dwarf stars

Astrophysics of Galaxies 2015-05-14 v1

Authors: T. Bensby , S. Feltzing , J. A. Johnson , A. Gould , H. Sana , A. Gal-Yam , M. Asplund , S. Lucatello , J. Melendez , A. Udalski , D. Kubas , G. James , D. Adén , J. Simmerer

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Abstract

We present elemental abundances of 13 microlensed dwarf and subgiant stars in the Galactic bulge, which constitute the largest sample to date. We show that these stars span the full range of metallicity from Fe/H=-0.8 to +0.4, and that they follow well-defined abundance trends, coincident with those of the Galactic thick disc.

Keywords

galactic bulge microlensing dwarf stars elemental abundances metallicity thick disc

Cite

@article{arxiv.0908.2779,
  title  = {Elemental abundances in the Galactic bulge from microlensed dwarf stars},
  author = {T. Bensby and S. Feltzing and J. A. Johnson and A. Gould and H. Sana and A. Gal-Yam and M. Asplund and S. Lucatello and J. Melendez and A. Udalski and D. Kubas and G. James and D. Adén and J. Simmerer},
  journal= {arXiv preprint arXiv:0908.2779},
  year   = {2015}
}

Comments

Poster contribution to Chemical abundances in the Universe, connecting first stars to planets, Proceedings of the International Astronomical Union, IAU Symposium, Volume 265, K. Cunha, M. Spite and B. Barbuy, eds, Cambridge University Press, in press

Elemental abundances in the Galactic bulge from microlensed dwarf stars

Abstract

Keywords

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