EAS Publications Series

Table of Contents - 2003 - Volume 6  

Research Article

Stellar surface imaging using closure phase

Observing with the VLTI, Les Houches, France.

D. F. Buscher

Cavendish Laboratory, Cambridge, UK

Abstract

We describe the use of interferometry to make images of features on the surfaces of cool stars. We describe observations of Betelgeuse (α Ori) and use this example to illustrate the requirements for astrophysical imaging with interferometers. We emphasise the importance of obtaining closure phase measurements and good Fourier plane coverage when imaging complex objects.

(Online publication January 31 2003)