Volume 406, Number 1, July IV 2003
|Page(s)||L15 - L18|
|Published online||17 November 2003|
Letter to the Editor
Interferometry and asteroseismology: The radius of τ Cet*
Theoretical Astrophysics Center (TAC), Department of Physics and Astronomy, Aarhus University, Ny Munkegade, 8000 Århus C, Denmark e-mail: firstname.lastname@example.org;email@example.com
2 Centro de Astrofísica da Universidade do Porto, Rua das Estrelas, 4150-762 Porto, Portugal e-mail: firstname.lastname@example.org;email@example.com;firstname.lastname@example.org;email@example.com
3 Department of Physics and Astronomy, Aarhus University, Denmark
4 Faculdade de Engenharia da Universidade do Porto, Portugal
5 Dept. de Matemática Aplicada da Faculdade de Ciências da Universidade do Porto, Portugal
Corresponding author: F. P. Pijpers, firstname.lastname@example.org
Accepted: 4 June 2003
We have determined from interferometry the radius of the nearby star τ Cet, using recent observations with the VINCI instrument on VLTI using the siderostats. The limb-darkened disk diameter is determined, with an unprecedented internal precision of , to be mas, corresponding to a physical radius of . With this determination τ Cet becomes a prime target for asteroseismic campaigns to determine its internal structure, and thereby test stellar evolution theory. We discuss implications for asteroseismology and present predictions for oscillation properties.
Key words: stars: fundamental parameters / stars: oscillations / stars: evolution / stars: individual: τ Cet
© ESO, 2003
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