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About the chemical composition of $\delta$ Scuti: the prototype of the class of pulsating variables

Published online by Cambridge University Press:  02 March 2005

A.V. Yushchenko ,
V.F. Gopka ,
Chulhee Kim ,
F.A. Musaev  and
Y.W. Kang
A.V. Yushchenko
Affiliation:
Astrophysical Research Center for the Structure and Evolution of the Cosmos (ARCSEC), Sejong University, Seoul, 143-747, (South) Korea email: yua@odessa.net Odessa Astronomical observatory, Odessa National University, Park Shevchenko, Odessa, 65014, Ukraine email: gopkavera@mail.ru
V.F. Gopka
Affiliation:
Odessa Astronomical observatory, Odessa National University, Park Shevchenko, Odessa, 65014, Ukraine email: gopkavera@mail.ru
Chulhee Kim
Affiliation:
Department of Earth Science Education, Chonbuk National University, Chonju 561-756, (South) Korea email: chkim@astro.chonbuk.ac.kr
F.A. Musaev
Affiliation:
Special Astrophysical observatory of the Russian Academy of Sciences, Nizhnij Arkhyz, Zelenchuk, Karachaevo-Cherkesiya, 369167, Russia email: faig@sao.ru The International Centre for Astronomical, Medical and Ecological Research of the Russian Academy of Sciences and the National Academy of Sciences of Ukraine, Ukraine Shamakhy Astrophysical Observatory, NAS of Azerbaijan, Yusif Mamedaliev, Shamakhy, Azerbaijan
Y.W. Kang
Affiliation:
Astrophysical Research Center for the Structure and Evolution of the Cosmos (ARCSEC), Sejong University, Seoul, 143-747, (South) Korea email: yua@odessa.net
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Abstract

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We derived the chemical abundances in the photosphere of $\delta$ Scuti, the prototype of the class of pulsating variables, from the analysis of a spectrum obtained at the Terskol Observatory 2-m telescope with a resolution $R=52000$ and $S/N=250$. VLT and IUE spectra were also used. The abundance pattern of $\delta$ Sct consists of 49 chemical elements. The abundances of Be, P, Ge, Nb, Mo, Ru, Er, Tb, Dy, Tm, Yb, Lu, Hf, Ta, Os, Pt, and Th were not investigated previously. The lines of third spectra of Pr and Nd also are investigated for the first time. The abundances of heavy elements show overabundances with respect to the Sun up to 1 dex. The abundance pattern of $\delta$ Sct is similar to that of the Am-Fm stars.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Keywords

Stars: variables: $\delta$ Scutistars: abundancesstars: chemically peculiarstars: individual: ($\delta$ Scuti)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2004 , Issue IAUS224 , July 2004 , pp. 822 - 828
Copyright
© 2004 International Astronomical Union