[en] We present a numerical version of the moment method for the identification of non-radial pulsation modes. The new version requires less computation time than the previous one, allowing to consider all the information contained in the first three moments of a multiperiodic star and to identify multiple modes simultaneously. This, together with the use of a new discriminant which considers the moments calculated at each time of observation, increases the feasibility and the accuracy of the mode identification for multiperiodic stars. Moreover, the technique is extended to rotating pulsating stars. We apply the new version to three B stars showing multiperiodicity.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Briquet, Maryline ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie
Aerts, C.; Katholieke Universiteit Leuven - KUL > Instituut voor Sterrenkunde
Language :
English
Title :
A new version of the moment method, optimized for mode identification in multiperiodic stars
Publication date :
July 2002
Event name :
Interplay of periodic, cyclic and stochastic variability in selected areas of the H-R diagram
Event date :
from 22-07-2002 to 24-07-2002
Audience :
International
Main work title :
Interplay of Periodic, Cyclic and Stochastic Variability in Selected Areas of the H-R Diagram
