CHEMICAL COMPOSITION; DWARF STARS; GALACTIC EVOLUTION; HALOS; SPECTRAL LINE WIDTH; ASTRONOMICAL PHOTOMETRY; CASSEGRAIN OPTICS; CHARGE COUPLED DEVICES; SIGNAL TO NOISE RATIOS
Abstract :
[en] 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.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Zhao, G.; European Southern Observatory, Garching, Federal Republic of Germany ; Nanjing University, People's Republic of China
Magain, Pierre ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image
Language :
English
Title :
The chemical composition of the extreme halo stars. III - Equivalent widths of 20 dwarfs
