Fundamental parameters of some B-type stars using NOAO Indo-U.S. Library

In the present article, we a spectroscopic analysis of 83 field B-type stars from NOAO Indo-U.S. Library. We calculated fundamental parameters e.g effective temperatures, surface gravities, and rotational velocities using Barbier-Chalonge-Divan (BCD) method line blanketed LTE/NLTE model atmospheres. The projected velocity was estimated by fitting Mg II4481 {\AA} profile with theoretical lines models. evolutionary masses for program are most cases, study gives fair agreement earlier investigations is even more accurate in some cases.