Continuum and line spectrophotometry of bright high velocity A-stars is reported and effective temperatures and surface gravities are derived. The surface abundance of Ca is found from the strength of the line Ca II K ? 3933 Å and compared with that in Population I stars of the same temperature. Seven stars of the sample are blue horizontal branch stars. Only two stars, 7 Sex and HD 26298, appear to have Ca abundances which are near solar.
- 1 - natural sciences ; 2 - physics & astronomy ; 3 - astronomy & astrophysics
- 1 - sciences appliquees, technologies et medecines ; 2 - sciences biologiques et medicales ; 3 - sciences biologiques fondamentales et appliquees. psychologie ; 4 - biophysique moleculaire
- 1 - Physical Sciences ; 2 - Earth and Planetary Sciences ; 3 - Space and Planetary Science
- 1 - Physical Sciences ; 2 - Physics and Astronomy ; 3 - Astronomy and Astrophysics