Recent MOST space photometry

Abstract

The Microvariability and Oscillations of STars (MOST) photometric satellite has already undertaken more than 64 primary campaigns which include some clusters and has obtained observations of >850 secondary stars of which ~180 are variable. More than half of the variables pulsate, with the majority being of B-type. Since 2006 January, MOST has operated with only a single CCD for both guiding and science. The resulting increase in read-out cadence has improved precision for the brightest stars. The 2007 light curve for Procyon confirms the lack of predicted p-modes with photometric amplitudes exceeding 8 ppm as we found in 2004 and 2005. p-modes have been detected in other solar-type stars as well as pre-main sequence objects, roAp and delta Scuti variables. g-modes have been detected in a range of slowly pulsating B stars, Be stars and beta Cephei variables. Differential rotation has been defined for several spotted solar-type stars and limits set to the albedo of certain transiting planets and the presence of other perturbing planets. The mission is expected to continue as long as the experiment operates.

9 pages, 7 figures, from HELAS-II meeting

References in corpus (14)

• Catalogue of [Fe/H] determinations for FGK stars : 2001 edition
• An Upper Limit on the Albedo of HD 209458b: Direct Imaging Photometry with the MOST Satellite
• Most Detects G- and P-Modes in the B Supergiant HD 163899 (B2Ib/II)
• MOST Detects g-Modes in the Late-Type be Star beta CMi (B8Ve)
• delta Ceti is not monoperiodic: seismic modeling of a beta Cephei star from MOST spacebased photometry
• Solar-like oscillations in Procyon A
• p-mode frequencies in solar-like stars : I. Procyon A
• Discover of the "missing" mode in HR 1217 by the Whole Earth Telescope
• Evidence for Granulation and Oscillations in Procyon from Photometry with the WIRE satellite
• Discovery of the new slowly pulsating B star HD 163830 (B5II/III) from MOST spacebased photometry
• The non-detection of oscillations in Procyon by MOST: is it really a surprise?
• Reduction of time-resolved space-based CCD photometry developed for MOST Fabry Imaging data
• Seismology of Procyon A: determination of mode frequencies, amplitudes, lifetimes, and granulation noise
• Simulating the outer layers of Procyon A: a comparison with the Sun