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)
This paper presents extended analyses of β UMa (A0mA1 IV‐V), α Dra (A0 III), π Dra (A2 IIIs), and κ Cep (B9 III) which have previously been studied in this series. α Dra is a metal‐poor star while κ Cep has solar abundances. Both β UMa and π Dra are Am stars. Whenever possible, more accurate and pre...
Saved in:
Published in | Astronomische Nachrichten Vol. 332; no. 2; pp. 153 - 158 |
---|---|
Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Berlin
WILEY-VCH Verlag
01.02.2011
WILEY‐VCH Verlag |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | This paper presents extended analyses of β UMa (A0mA1 IV‐V), α Dra (A0 III), π Dra (A2 IIIs), and κ Cep (B9 III) which have previously been studied in this series. α Dra is a metal‐poor star while κ Cep has solar abundances. Both β UMa and π 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 (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) |
---|---|
Bibliography: | Natural Sciences and Engineering Research Council of Canada ark:/67375/WNG-7Z09M4S9-S grants from The Citadel Foundation Table 4 is available at the CDS via http://cdsarc.u-strasbg.fr/cgi-bin/qcat?J/AN/332/153 ArticleID:ASNA201011488 istex:4068ABF178993ADB733094A37FD378794CDD898C Table 4 is available at the CDS via http://cdsarc.u‐strasbg.fr/cgi‐bin/qcat?J/AN/332/153 |
ISSN: | 0004-6337 1521-3994 |
DOI: | 10.1002/asna.201011488 |