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Calibration Observations of Fomalhaut with the VLTI

J. Davis·A. Richichi·P. Ballester·Ph. Gitton·A. Glindemann·S. Morel·M. Schoeller·M. Wittkowski·F. Paresce
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Abstract

An investigation of the stability of the transfer function of the European Southern Observatory's Very Large Telescope Interferometer has been carried out through observations of Fomalhaut over a wide range in hour angle. No significant variation in the transfer function was found for the zenith angle range 5-70 degrees. The projected baseline varied between 139.7 m and 49.8 m during the observations and, as an integral part of the determination of the transfer function, a new accurate limb-darkened angular diameter for Fomalhaut has been established. This has led to improved values for the emergent flux, effective temperature, radius and luminosity.

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J. Davis, A. Richichi, P. Ballester, Ph. Gitton, A. Glindemann, S. Morel, M. Schoeller, M. Wittkowski, F. Paresce. 2004-10-26. Calibration Observations of Fomalhaut with the VLTI. https://doi.org/10.1002/asna.200410339

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