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Cepheid observations with the Sydney University Stellar Interferometer : ℓ Carinae and β Doradus
ESO Workshop (4 - 8 April 2005 : Garching, Germany)
Richichi, A.; Delplancke, F.; Paresce, F. and Chelli, A.. The Power of optical/IR interferometry : recent scientfic results and 2nd generation instrumentation : proceedings of the ESO Workshop held in Garching, Germany, 4-8 April 2005, p.105-109
Observations of the southern Cepheids ℓ Car and β Dor to yield the mean angular diameters and angular pulsation amplitudes have been made with the Sydney University Stellar Interferometer (SUSI)at a wavelength of 700 nm. The results of a preliminary analysis are compared with those obtained with the VLTI at 2.2 μm and excellent agreement between the results from the two instruments is found for ℓ Car but there are significant differences for β Dor.