2005/12/20 by Bacham E. Reddy, David L. Lambert, Carlos Allende Prieto · 3 citations
Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics and Star Formation Studies #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1111/j.1365-2966.2006.10148.x
published as Mon.Not.Roy.Astron.Soc.367:1329-1366,2006 · 57 pages (text: 27 pages in MNRAS format + 27 figures) Accepted for publication in MNRAS
arxiv created 2005/12/20 · openalex publication_date 2006/03/14 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We have performed an abundance analysis for F-and G-dwarfs of the Galactic thick-disc component. A sample of 176 nearby (d 150 pc) thick-disc candidate stars was chosen from the Hipparcos catalogue and subjected to a high-resolution spectroscopic analysis. Using accurate radial velocities combined with the Hipparcos astrometry, kinematics (U, V and W) and Galactic orbital parameters were computed. We estimate the probability for a star to belong to the thin disc, the thick disc or the halo. With a probability P 70 per cent taken as certain membership, we assigned 95 stars to the thick disc, 13 to the thin disc, and 20 to the halo. The remaining 48 stars in the sample cannot be assigned with reasonable certainty to one of the three components.