Equivalent widths for Fe-group lines in field and cluster metal poor stars.
Abstract
Abundances of Fe-group elements in field and cluster metal poor stars have been presented in Gratton and Sneden (1990). Presented here is a tabulation of the equivalent widths used in that paper. Errors in these equivalent widths are + or - 2 mA for field stars (observed at a resolution of 50,000 and S/N of 150 or less), and + or - 10 mA in cluster giants (observed at a resolution of 20,000 and S/N of 100 or less). These errors are mainly due to uncertainties (about 1-1.5) in the location of the continuum level.
- Publication:
-
Astronomy and Astrophysics Supplement Series
- Pub Date:
- December 1990
- Bibcode:
- 1990A&AS...86..269G
- Keywords:
-
- Error Analysis;
- Giant Stars;
- Globular Clusters;
- Iron;
- Spectral Line Width;
- Stellar Composition;
- Charge Coupled Devices;
- Metallicity;
- Signal To Noise Ratios;
- Astronomy