Title: Inferences from pulsational amplitudes and phases for multimode delta Sct star FG Vir
Authors: Daszynska-Daszkiewicz, J ×
Dziembowski, WA
Pamyatnykh, AA
Breger, M
Zima, Wolfgang
Houdek, G #
Issue Date: Aug-2005
Publisher: Springer-Verlag
Series Title: Astronomy & Astrophysics vol:438 issue:2 pages:653-660
Abstract: We combine photometric and spectroscopic data on twelve modes excited in FG Vir to determine their spherical harmonic degrees l, and to obtain constraints on the star model. The effective temperature consistent with the mean colours and the pulsation data is about 7200 K. In six cases, the l identification is unique with above 80% probability. Two modes are identified as radial. Simultaneously with l, we determine a complex parameter f which probes subphotospheric stellar layers. Comparing its values with those derived from models assuming different treatment of convection, we find evidence that convective transport in the envelope of this star is ineffcient.
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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