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Multi-wavelength angular diameters of pulsating red giants with
MAPPIT
M.J. Ireland,
P.G. Tuthill,
T.R. Bedding,
J.G. Robertson and
A.P. Jacob
School of Physics, University of Sydney 2006, Australia
We have used optical interferometry to obtain multi-wavelength angular diameters for seven pulsating red giants. The observations consist of wavelength-dispersed fringes recorded with MAPPIT (Masked APerture-Plane Interference Telescope) at the 3.9-m Anglo-Australian Telescope. We present results for Miras (RCar, o Cet, R Hya, R Leo) and semiregular variables (R Dor, W Hya, L2 Pup), all of which show strong variations of angular diameter with wavelength.
Last changed: 2002/Jun/19
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