Interferometry and asteroseismology: The radius of τ Cet
Frank P. Pijpers,T. C. Teixeira,T. C. Teixeira,Paulo J. V. Garcia,Paulo J. V. Garcia,Margarida S. Cunha,Mário J. P. F. G. Monteiro,Joergen Christensen-Dalsgaard +7 more
TLDR
In this article, the radius of the nearby star τ Cet has been determined from interferometry using the VINCI instrument on VLTI using the siderostats.Abstract:
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 0.5%, to be 1.971 ± 0.009(int.) ± 0.05(ext.) mas, corresponding to a physical radius of 0.773 ± 0.004(int.) ± 0.02(ext.) R� . 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.read more
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Near-IR Observations of Vega-like Stars with the VLTI: β Pic, α PsA, ∊ Eri and τ Cet
Emmanuel Di Folco,Pierre Kervella,Frédéric Thévenin,Pierre Morel,Armando Domiciano de Suza,Vincent Coudé du Foresto +5 more
TL;DR: In this article, K band interferometric observations of four nearby main-sequence Vega-like stars at the VLTI with very long baselines have been conducted to probe the innermost region of the disks, where planets are supposed to be formed.
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