CoRoT Symposium 3, Kepler KASC-7 joint meeting
6-11 Jul 2014 Toulouse (France)

Abstracts > Zong Weikai

Evidence of resonant mode coupling in the hot B subdwarf star KIC10139564
Weikai Zong  1@  , Stéphane Charpinet  1, *@  , Gérard Vauclair  1@  
1 : Institut de recherche en astrophysique et planétologie  (IRAP)
CNRS : UMR5277, Observatoire Midi-Pyrénées, Université Paul Sabatier (UPS) - Toulouse III
14, avenue Edouard Belin 31400 Toulouse -  France
* : Corresponding author

We present the results of period and amplitude modulations in hot B subdwarf star KIC10139564 based on the 38-month exquisite quality data observed by Kepler spacecraft. Among the 12 frequencies concerned, including three multiplets and one independent frequency, the primary triplet at 5760 μHz show evident modulations of period and amplitude. The rest two mulitiplets are showing the modulations as the primary triplet but in a very small range. The frequency modulations are beyond our current pulsating theory and could be the evidence of resonant mode coupling. More theoretical work is needed to investigate further the relevence of this mechanism.

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