The nature of the metal-rich thick disk
Astrophysics
2007-05-23 v1
Abstract
We have traced the Galactic thick disk to its, to date, highest metallicities. Based on high-resolution spectroscopic observations of 187 F and G dwarf stars that kinematically can be associated either with the thin disk (60 stars) or with the thick disk (127 stars), we find that the thick disk stars reach at least solar metallicities, and maybe even higher. This finding is independent of the U_LSR, V_LSR and W_LSR velocities of the stars.
Keywords
Cite
@article{arxiv.astro-ph/0612459,
title = {The nature of the metal-rich thick disk},
author = {T. Bensby and A. R. Zenn and M. S. Oey and S. Feltzing},
journal= {arXiv preprint arXiv:astro-ph/0612459},
year = {2007}
}
Comments
6 pages, to appear in proceedings for "From stars to galaxies: Building the pieces to build up the Universe" conference, held in Venice, 16-20 October 2006, A. Vallenari, R. Tantali, L. Portinari, A. Moretti (eds), ASP Conf Ser