微引力透镜矮星揭示的银河系核球元素丰度
星系天体物理
2015-05-14 v1
摘要
我们给出了银河系核球中13颗微引力透镜矮星和亚巨星的元素丰度，这是迄今为止最大的样本。我们表明，这些恒星的金属丰度范围从Fe/H=-0.8到+0.4，并且它们遵循定义明确的丰度趋势，与银河系厚盘的丰度趋势一致。
引用
@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}
}
备注
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