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

•We determined the fundamental parameters of 83 B-type stars from NOAO Indo-U.S. Library.•Barbier-Chalonge-Divan (BCD) method and line blanketed LTE/NLTE model atmospheres are used.•Comparison with earlier studies is performed.•Approximate masses of the target stars are determined. In this article,...

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Bibliographic Details
Published in:New astronomy 2022-05, Vol.93, p.101780, Article 101780
Main Authors: Shokry, A., Nouh, M.I., Saad, S.M., Helmy, I.
Format: Article
Language:English
Subjects:
BCD method
Field B-stars
Fundamental parameters
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Summary:•We determined the fundamental parameters of 83 B-type stars from NOAO Indo-U.S. Library.•Barbier-Chalonge-Divan (BCD) method and line blanketed LTE/NLTE model atmospheres are used.•Comparison with earlier studies is performed.•Approximate masses of the target stars are determined. In this article, we present a spectroscopic analysis of 83 field B-type stars from NOAO Indo-U.S. Library. We calculated the fundamental parameters such as effective temperatures, surface gravities, and rotational velocities using Barbier-Chalonge-Divan (BCD) method and line blanketed LTE/NLTE model atmospheres. The projected rotational velocities were estimated by fitting the Mg II4481 Å line profile with theoretical lines calculated from LTE/NLTE models. The evolutionary masses for the program stars are estimated using the evolutionary models. In most of the cases, the present study gives fair agreement with earlier investigations and is even more accurate in some cases.
ISSN:1384-1076
1384-1092
DOI:10.1016/j.newast.2022.101780