Interferometric Studies of Hot Stars at Sydney University

Details Interferometric Studies of Hot Stars at Sydney University Interferometric Studies of Hot Stars at Sydney University

2009-05-12

arxiv.org/abs/0905.1749v1

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

2 pages. To appear in RevMexAA(SC) 'The Interferometric View on Hot Stars' (Conference held at Vina del Mar, March 2-6, 2009)

Scientific paper

The University of Sydney has a long history in optical stellar interferometry. The first project, in the 1960s, was the Narrabri Stellar Intensity Interferometer, which measured the angular diameters of 32 hot stars and established the temperature scale for spectral classes O - F. That instrument was followed by the Sydney University Stellar Interferometer (SUSI), which is now undergoing a third-generation upgrade, to use the multi-wavelength PAVO beam combiner. SUSI operates at visible rather than IR wavelengths and has baselines up to 160 m, so it is well suited to the study of hot stars. A number of studies have been carried out, and more are planned when commissioning of the PAVO system is complete. Conversion of the system to allow remote operation will allow larger scientific projects to be undertaken.

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