Multiwavelength visibility measurements of the red giant R Doradus

A. P. Jacob; Tim R. Bedding; J. Gordon Robertson; John R. Barton; Christopher A. Haniff; Ralph G. Marson; Michael Scholz

doi:10.1117/12.390197

5 July 2000 Multiwavelength visibility measurements of the red giant R Doradus

A. P. Jacob, Tim R. Bedding, J. Gordon Robertson, John R. Barton, Christopher A. Haniff, Ralph G. Marson, Michael Scholz

Author Affiliations +

Proceedings Volume 4006, Interferometry in Optical Astronomy; (2000) https://doi.org/10.1117/12.390197
Event: Astronomical Telescopes and Instrumentation, 2000, Munich, Germany

Abstract

We present visibility measurements of the nearby Mira-like star R Doradus taken over a wide range of wavelengths (650 - 990 nm). The observations were made using MAPPIT (Masked APerture-Plane Interference Telescope), an interferometer operating at the 3.9-m Anglo-Australian Telescope. We used a slit to mask the telescope aperture and prism to disperse the interference pattern in wavelength. We observed in R Dor strong decreases in visibility within the TiO absorption bands. The results are in general agreement with theory but differ in detail, suggesting that further work is needed to refine the theoretical models.

Citation Download Citation

A. P. Jacob, Tim R. Bedding, J. Gordon Robertson, John R. Barton, Christopher A. Haniff, Ralph G. Marson, and Michael Scholz "Multiwavelength visibility measurements of the red giant R Doradus", Proc. SPIE 4006, Interferometry in Optical Astronomy, (5 July 2000); https://doi.org/10.1117/12.390197

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