Searching for p-modes in n Boötis & Procyon using MOST satellite data

We present frequency analyses of new photometry obtained in 2005 by the MOST 1 (Microvariability & Oscillations of STars) satellite of two solar- type stars, Bootis and Procyon, and reanalyses of MOST data of these stars obtained in 2004. With improved strategies to identify and correct stray light artifacts in the MOST Fabry Imaging data, we produce amplitude spectra from the reduced data and compare them to p-mode oscillation spectra computed from stellar models. We confirm the null result from the 2004 MOST observa- tions of Procyon. We find no evidence for spectral power with regular spaced frequencies characteristic of radial p-modes, nor do we find excess power in the expected p-mode frequency range. Consequently, we argue the absence of p-mode oscillations in Procyon exceeding our detection limit of about 10ppm. 1 Based on data from the MOST satellite, a Canadian Space Agency mission, jointly