Seismic detection of acoustic sharp features in the CoRoT target HD 49933

  title={Seismic detection of acoustic sharp features in the CoRoT target HD 49933},
  author={Anwesh Mazumdar and Eric Michel and H. M. Antia and S{\'e}bastien Deheuvels},
  journal={Astronomy and Astrophysics},
ABSTRACT The technique of determining the acoustic location of layers of sharp changes in the sound speed inside a star from the oscillatorysignal in its frequencies is applied on a solar-type star, the CoRoT target, HD 49933. We are able to determine the acoustic depth ofthe second helium ionisation zone of HD 49933 to be 794 +55 68 s. The acoustic depth of the base of the convective zone is found to be1855 +173 412 s where the large error bars reflect the ambiguity in the result, which is di… 

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