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Calibration Observations of Fomalhaut with the VLTI

By SpaceRef Editor
July 9, 2005
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Astrophysics, abstract

From: John Davis [view email]
Date: Tue, 26 Oct 2004 12:02:10 GMT (37kb)

Calibration Observations of Fomalhaut with the VLTI

J. Davis (1 and 2),
A. Richichi (2),
P. Ballester (2),
Ph. Gitton (2),
A. Glindemann (2),
S. Morel (2),
M. Schoeller (2),
M. Wittkowski (2),
F. Paresce (2) ((1) University of Sydney, (2) European Southern Observatory)

Comments: 6 pages, 4 figures, uses an.cls, accepted for publication in Astron.

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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