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Procyon A, a bright F5 IV-V Sun-like star, is justifiably regarded as a primeasteroseismological target. This star was repeatedly observed by MOST, aspecialized microsatellite providing long-term, non-interrupted broadbandphotometry of bright targets. So far, the widely anticipated p modes eludeddirect photometric detection, though numerous independent approaches hinted forthe presence of signals in the f~0.5-1.5 mHz range. Implementation of analternative approach in data processing, as well as combination of the MOSTdata from 2004 and 2005 (264189 measurements in total) helps to reduce theinstrumental noise affecting previous reductions, bringing the 3-sigmadetection limit down to ~5.5 part-per-million in the f=0.8-1.2 mHz range. Thisenables to cross-identifiy 16 p-mode frequencies (though not their degrees)which were previously detected via high-precision radial velocity measurements,and provides an estimate of the large spacing, delta_nu =0.0540 mHz at f~1 mHz.The relatively low average amplitude of the detected modes, a=5.8+/-0.6 ppm,closely matches the amplitudes inferred from the ground-based spectroscopy andupper limits projected from WIRE photometry. This also explains why suchlow-amplitude signals eluded the direct-detection approach which exclusivelyrelied on the MOST 2004 (or 2005) data processed by a standard pipeline.

Recovery of p-modes in the combined 2004-2005 MOST observations of Procyon