Asteroseismology with the MOST space mission

Details Asteroseismology with the MOST space mission Asteroseismology with the MOST space mission

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iaujd..17e..21m&link_type=abstract

Highlights of Recent Progress in the Seismology of the Sun and Sun-Like Stars, 26th meeting of the IAU, Joint Discussion 17, 23

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Scientific paper

After over three years in space, the Microvariability & Oscillations of STars (MOST) satellite has obtained about 500 light curves of high photometric precision, rapid sampling, long - time coverage and duty cycles approaching 100%. Photometry of bright solar-type stars has reached detection thresholds of a few ppm, and we recently monitored α Centauri A for about a month (despite its location far outside MOST's Continuous Viewing Zone). MOST photometry has resulted in seismic models for red giants such as ɛ Ophiuchi and HD 20884 (a p-mode discovery), the β Cephei star δ Ceti, SPB (Slowly Pulsating B) stars and the new classes of SPBe and SPBsg pulsators discovered by MOST, and the magnetic pulsating roAp star HR 1217 = HD 24712. MOST has also discovered the richest oscillation spectrum observed for any star other than the Sun (at least 84 frequencies), the δ Scuti star HD 209775, which we locate in the HR Diagram based on excitation models and eigenfrequency spacings.

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