Title: Pulsations detected in the line profile variations of red giants - Modelling of line moments, line bisector and line shape
Authors: Hekker, S
Aerts, Conny
De Ridder, Joris
Carrier, Fabien #
Issue Date: Nov-2006
Publisher: Edp sciences s a
Series Title: Astronomy & astrophysics vol:458 issue:3 pages:931-940
Abstract: Context. So far, red giant oscillations have been studied from radial velocity and/or light curve variations, which reveal frequencies of the oscillation modes. To characterise radial and non-radial oscillations, line profile variations are a valuable diagnostic. Here we present for the first time a line profile analysis of pulsating red giants, taking into account the small line profile variations and the predicted short damping and re-excitation times. We do so by modelling the time variations in the cross correlation profiles in terms of oscillation theory.
ISSN: 1432-0746
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Institute of Astronomy
# (joint) last author

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