No stellar p-mode oscillations in space-based photometry of Procyon

Jaymie M. Matthews (), Rainer Kusching, David B. Guenther, Gordon A. H. Walker, Anthony F.J. Moffat, Slavek M. Rucinski, Dimitar Sasselov and Werner W. Weiss
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Jaymie M. Matthews: University of British Columbia
Rainer Kusching: University of British Columbia
David B. Guenther: St Mary's University
Gordon A. H. Walker: University of British Columbia
Anthony F.J. Moffat: Université de Montréal, CP 6128, Succ. Centre-Vile
Slavek M. Rucinski: University of Toronto
Dimitar Sasselov: Harvard-Smithsonian Center for Astrophysics
Werner W. Weiss: Universität Wien

Nature, 2004, vol. 430, issue 6995, 51-53

Abstract: Abstract Pressure-driven (p-mode) oscillations at the surface of the Sun, resulting from sound waves travelling through the solar interior, are a powerful probe of solar structure, just as seismology can reveal details about the interior of the Earth. Astronomers have hoped to exploit p-mode asteroseismology1 in Sun-like stars to test detailed models of stellar structure and evolution, but the observations are extremely difficult. The bright star Procyon has been considered one of the best candidates for asteroseismology, on the basis of models and previous reports2,3,4,5,6,7,8 of p-modes detected in ground-based spectroscopy. Here we present a search for p-modes in 32 days of nearly continuous photometric satellite-based observations of Procyon. If there are p-modes in Procyon, they must have lifetimes less than 2–3 days and/or peak amplitudes

Date: 2004
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DOI: 10.1038/nature02671

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