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SUMMARY:The search for planets around alpha centauri A and B - Fischer\, D
  (Yale)
DTSTART:20090820T133000Z
DTEND:20090820T140000Z
UID:TALK19484@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:We are carrying out an intensive Doppler search for low mass p
 lanets in the alpha Centauri system at the 1.5-m CTIO telescope. The binar
 y star system presents a challenging environment for the accretion of plan
 etesimals into protoplanets. However\, dynamical simulations show that if 
 they form\, terrestrial mass planets within about 2 AU of either star coul
 d survive in stable orbits. We present the motivation for our exoplanet se
 arch and describe the auxiliary science: the power spectrum of p-mode osci
 llations\, a study of the convective zone depth in A and B\, and a measure
 ment of the helium abundances in the stars. This program will also help us
  to determine the fundamental limits of Doppler planet searches. We will p
 resent the status of the project and our Doppler analysis.
LOCATION:Seminar Room 1 Newton Institute
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