Canada's Little Space Telescope That Could: Another Year of Scientific Surprises From the MOST Microsatellite

Details Canada's Little Space Telescope That Could: Another Year of Scientific Surprises From the MOST Microsatellite Canada's Little Space Telescope That Could: Another Year of Scientific Surprises From the MOST Microsatellite

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005jrasc..99q.131m&link_type=abstract

Journal of the Royal Astronomical Society of Canada, Vol. 99, No. 4, p.131

Astronomy and Astrophysics

Astrophysics

Scientific paper

At CASCA 2004 in Winnipeg, I announced the first scientific results from the MOST (Microvariability & Oscillations of STars) mission, launched in summer 2003. These included the controversial null detection of acoustic oscillations in the light output of Procyon, at odds with theory and groundbased spectroscopy, and the first direct measurement of differential rotation in a star other than the Sun, kappa 1 Ceti. A year later, by CASCA 2005 in Montreal, I'll be able to share even more exciting astrophysics, including: ultraprecise photometric studies of exoplanetary systems like 51 Pegasi, tau Bootis, and HD 209458; new perspectives on massive stars like zeta Oph and the Wolf-Rayet star WR 123; the definitive eigenfrequency spectrum of a pulsating chemically peculiar star (HR 1217), which provides an acid test for theories of magneto-acoustic coupling; and seismology of pulsating protostars in the open cluster NGC 2264. I'll also return to Procyon, shedding more light on the oscillation controversy by showing how MOST observations compare to 3-D hydrodynamical simulations of granulation in that star. And between February and May, MOST will monitor a G dwarf and a K dwarf to search for true analogues of the solar 5-min oscillations. Too much to fit into 50 minutes, but I'll try to convey a broad flavour of the diverse MOST science (and, as usual, I'll talk really, really fast).

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