Abstract.
In a recent investigation [1] we have identified over a hundred wide, common proper-motion binaries belonging to the old disk, the thick disk or the halo of the Galaxy. These systems were found by searching for common propermotion companions to the high-velocity, metal-poor primaries of the lists of Schuster et al. [3,4]. For these stars, Strömgren photometry has allowed the determination of metallicities, distances and, in many cases, individual ages. The values obtained for the metallicities and ages of a number of these stars place them among the oldest, most metal-poor stars of the Galaxy. For the purposes of this work, we concentrate our attention on those stars with [Fe/H] < -2.00 as representatives of the very early stellar population of our Galaxy.
Author information
Authors and Affiliations
Editor information
Rights and permissions
About this paper
Cite this paper
Allen, C., Poveda, A., Herrera, M.A. Three Very Metal-Poor, Extremely Wide Binaries. In: Weiss, A., Abel, T.G., Hill, V. (eds) The First Stars. ESO ASTROPHYSICS SYMPOSIA. Springer, Berlin, Heidelberg. https://doi.org/10.1007/10719504_11
Download citation
DOI: https://doi.org/10.1007/10719504_11
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-67222-7
Online ISBN: 978-3-540-46461-7
eBook Packages: Springer Book Archive