1 INTRODUCTION  
2 SAMPLE SELECTION  
2.1 Hipparcos Sample  
2.2 mCP Subsample  
3 SPECTROPOLARIMETRIC OBSERVATIONS  
4 DISTRIBUTION AND COMPLETENESS  
5 DERIVATION OF FUNDAMENTAL PARAMETERS  
5.1 non-mCP subsample  
5.2 mCP subsample  
5.3 HD 109026  
5.4 Hertzsprung-Russell diagram  
6 RESULTS  
6.1 Confirmation of $T_{\mathrm{eff}}$  
6.2 Mass distribution  
6.3 Evolutionary state  
6.4 Chemical abundances  
7 DISCUSSION AND CONCLUSIONS