Publication
Title
Abundance analysis of seven δ Scuti stars
Author
Abstract
Context. The current knowledge of the abundance pattern in delta Scuti stars is based on analysis of just a few field stars. Aims. We aim to determine the general chemical properties of the atmospheres of delta Scuti stars based on a statistically relevant sample of stars and investigate whether the abundance pattern is close to solar, an assumption generally made for pulsation models. Methods. We analysed high-resolution, high signal-to-noise ratio spectra of seven field d Scuti stars. We derived the fundamental parameters and the photospheric abundances and than compared them to a similar sample of cluster delta Scuti stars. Results. With the use of a t-test we demonstrate that there is no difference between the two samples, which allows us to merge them, resulting in a sample of fifteen delta Scuti stars. We do not find any substantial difference between the abundance pattern of our sample of delta Scuti stars and a sample of normal early A- and late F-type stars. One field star in our sample, HD 124953, is most likely a pulsating Am star.
Language
English
Source (journal)
Astronomy and astrophysics. - Berlin, 1969, currens
Publication
Berlin : Springer, 2008
ISSN
0004-6361 [print]
1432-0746 [online]
Volume/pages
485:1(2008), p. 257-265
ISI
000256690600026
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
Publication type
Subject
External links
Web of Science
Record
Identification
Creation 26.04.2018
Last edited 14.09.2021