Elemental abundance analyses with DAO spectrograms: XXXIII. β UMa (A0mA1 IV-V), α Dra (A0 III), π Dra (A2 IIIs), and κ Cep (B9 III)

被引:13
作者
Adelman, S. J. [1 ]
Yu, K. [1 ]
Gulliver, A. F. [2 ]
机构
[1] Citadel, Dept Phys, Charleston, SC 29409 USA
[2] Brandon Univ, Dept Phys & Astron, Brandon, MB R7A 6A9, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
stars: abundances; stars: chemically peculiar; stars: fundamental parameters; stars: individual: (beta UMa; alpha Dra; pi Dra; kappa Cep); ATOMIC TRANSITION-PROBABILITIES; OSCILLATOR-STRENGTHS; ROTATIONAL VELOCITIES; CRITICAL COMPILATION; SOLAR ABUNDANCE; MAIN-SEQUENCE; TERM SYSTEM; F-STARS; SPECTRUM; SPECTROPHOTOMETRY;
D O I
10.1002/asna.201011488
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
This paper presents extended analyses of beta UMa (A0mA1 IV-V), alpha Dra (A0 III), pi Dra (A2 IIIs), and kappa Cep (B9 III) which have previously been studied in this series. alpha Dra is a metal-poor star while kappa Cep has solar abundances. Both beta UMa and pi Dra are Am stars. Whenever possible, more accurate and precise gf values replace older values. High S/N (200+) and high dispersion Dominion Astrophysical Observatory spectrograms to the red of previously obtained spectra supplement the observations. The derived rotational velocities are 45, 25, 26, and 23 km s(-1), respectively. These LTE fine analyses use the ATLAS9 and the WIDTH9 programs of R. L. Kurucz. The results of the extended and the previous analyses are in good agreement. Thus in the past decade a significant improvement in the system of gf values has not been achieved although for many lines there have been changes. The use of additional regions has increased the quality of some results. (C) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
引用
收藏
页码:153 / 158
页数:6
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