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Title: Abundance analysis of seven delta Scuti stars
Authors: Fossati, L ×
Kolenberg, Katrien
Reegen, P
Weiss, W #
Issue Date: 2008
Publisher: EDP SCIENCES S A
Series Title: ASTRONOMY & ASTROPHYSICS vol:485 issue:1 pages:257-265
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 delta 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.
ISSN: 0004-6361
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Institute of Astronomy
× corresponding author
# (joint) last author

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