Oscillations on the star Procyon

Abstract

Stars are sphere of hot gas whose interiors transmit acoustic waves very efficiently. Geologists learn about the interior structure of Earth by monitoring how seismic waves propagate through it and, in a similar way, the interior of a star can be probed using the periodic motions on the surface that arise from such waves. Matthews et al. claim that the star Procyon does not have acoustic surface oscillations of the strength predicted. However, we show here, using ground-based spectroscopy, that Procyon is oscillating, albeit with an amplitude that is only slightly greater than the noise level observed by Matthews et al. using spaced-based photometry.

References in corpus (2)

• Solar-like oscillations in Procyon A
• p-mode frequencies in solar-like stars : I. Procyon A

Cited by in corpus (9)

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• SOPHIE+: First results of an octagonal-section fiber for high-precision radial velocity measurements
• Asteroseismology of the planet-hosting star $\mu$ Arae. I. The acoustic spectrum
• Solar-like oscillations and activity in Procyon: A comparison of the 2007 MOST and ground-based radial velocity campaigns
• The non-detection of oscillations in Procyon by MOST: is it really a surprise?
• Precise masses for the transiting planetary system HD 106315 with HARPS
• Searching for p-modes in MOST Procyon data: Another view
• Asteroseismology from solar-like oscillations