Solar-like oscillations in the G8 V star τ Ceti

  title={Solar-like oscillations in the G8 V star τ Ceti},
  author={T. Teixeira and H. Kjeldsen and T. Bedding and F. Bouchy and J. Christensen-Dalsgaard and M. Cunha and T. Dall and S. Frandsen and C. Karoff and M. Monteiro and F. Pijpers},
  journal={Astronomy and Astrophysics},
  • T. Teixeira, H. Kjeldsen, +8 authors F. Pijpers
  • Published 2009
  • Physics
  • Astronomy and Astrophysics
  • We used HARPS to measure oscillations in the low-mass star τ Cet. Although the data were compromised by instrumental noise, we have been able to extract the main features of the oscillations. We found τ Cet to oscillate with an amplitude that is about half that of the Sun, and with a mode lifetime that is slightly shorter than solar. The large frequency separation is 169 μHz, and we have identified modes with degrees 0, 1, 2, and 3. We used the frequencies to estimate the mean density of the… CONTINUE READING
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