The chemical composition ofthe extreme halo stars. III. Equivalent widths of 20.
Abstract
In the first two papers of this series the chemical composition of 20 extreme halo stars was discussed. The abundances of a number of elements were determined using model atmosphere analysis of equivalent widths. In this paper a tabulation of the equivalent width data is presented. A comparison of the measurements with the equivalent widths from different sources is used to assess the quality of the data.
- Publication:
-
Astronomy and Astrophysics Supplement Series
- Pub Date:
- November 1990
- Bibcode:
- 1990A&AS...86...85Z
- Keywords:
-
- Chemical Composition;
- Dwarf Stars;
- Galactic Evolution;
- Halos;
- Spectral Line Width;
- Astronomical Photometry;
- Cassegrain Optics;
- Charge Coupled Devices;
- Signal To Noise Ratios;
- Astrophysics