Title: Asteroseismology of the beta Cephei star nu Eridani - III. Extended frequency analysis and mode identification
Authors: De Ridder, Joris
Telting, JH
Balona, LA
Handler, G
Briquet, Maryline
Daszynska-Daszkiewicz, J
Lefever, Karolien
Korn, AJ
Heiter, U
Aerts, Conny #
Issue Date: Jul-2004
Publisher: Blackwell publishing ltd
Series Title: Monthly notices of the royal astronomical society vol:351 issue:1 pages:324-332
Abstract: Using the large photometric and spectroscopic data sets of the v Eridani multisite campaign given in our two recent papers (Aerts et al. and Handler et al.), we present an extended frequency analysis and a photometric mode identification. For the extended frequency analysis, we used an improved radial velocity time series, the second-moment time series and the line profiles themselves. In the radial velocity time series, we can now detect an additional pulsation frequency that was previously only found in photometric time series. We also report several new candidate pulsation frequencies. For seven frequencies, the photometric mode identification indicates that they belong to a radial mode and six dipole modes, and for three frequencies the degree l could not be unambiguously determined. We also placed v Eri in the Hertzsprung-Russell diagram by determining T-eff using Geneva plus Stromgren photometric calibrations, spectral energy distribution fitting, by non-local thermodynamic equilibrium hydrogen, helium and silicon line profile fitting, and by determining log(L/L-circle dot) using the Hipparcos parallax and an Hbeta calibration.
ISSN: 0035-8711
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Institute of Astronomy
# (joint) last author

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