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

被引：1

作者：

Shokry, A. ^{[1
,2
]}

Nouh, M., I ^{[1
]}

Saad, S. M. ^{[1
,2
]}

Helmy, I ^{[1
]}

机构：

[1] Natl Res Inst Astron & Geophys NRIAG, Astron Dept, Cairo 11421, Egypt

[2] Kottamia Ctr Sci Excellence Astron & Space Sci, KCScE, STDF, ASRT, Cairo, Egypt

来源：

NEW ASTRONOMY | 2022年 / 93卷

基金：

美国国家科学基金会;

关键词：

Field B -stars; BCD method; Fundamental parameters; ROTATIONAL VELOCITIES; EFFECTIVE TEMPERATURES; STELLAR ROTATION; BLUE; SUPERGIANTS; CALIBRATION; SPECTRA; RADII; FIELD;

D O I：

10.1016/j.newast.2022.101780

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 angstrom 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.

引用

页数：10

共 3 条

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Frémat, Y
Zorec, J
Hubert, AM
Floquet, M
ASTRONOMY & ASTROPHYSICS, 2005, 440 (01) : 305 - U209
[2] Spectroscopic determination of the fundamental parameters of 66 B-type stars in the field-of-view of the CoRoT satellite
Lefever, K.
Puls, J.
Morel, T.
Aerts, C.
Decin, L.
Briquet, M.
ASTRONOMY & ASTROPHYSICS, 2010, 515
[3] Open clusters III. Fundamental parameters of B stars in NGC6087, NGC6250, NGC6383, and NGC6530 B-type stars with circumstellar envelopes
Aidelman, Y.
Cidale, L. S.
Zorec, J.
Panei, J. A.
ASTRONOMY & ASTROPHYSICS, 2018, 610

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