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Differential interferometry imaging

Published online by Cambridge University Press:  25 May 2016

R. G. Petrov ,
S. Lagarde  and
M. N'GUYEN Van KY
R. G. Petrov
Affiliation:
Département d'Astrophysique Université de Nice – Sophia Antipolis U.R.A. 709 du C.N.R.S., Parc Valrose F-06108 Nice Cedex, France
S. Lagarde
Affiliation:
Département d'Astrophysique Université de Nice – Sophia Antipolis U.R.A. 709 du C.N.R.S., Parc Valrose F-06108 Nice Cedex, France
M. N'GUYEN Van KY
Affiliation:
Département d'Astrophysique Université de Nice – Sophia Antipolis U.R.A. 709 du C.N.R.S., Parc Valrose F-06108 Nice Cedex, France

Abstract

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Differential Interferometry (DI) combines high spectral and high spatial resolution. On non resolved objects, it yields the angular variation of the source photocenter as a function of wavelength which has been shown theoretically and experimentally to complement very usefully both interferometric and spectroscopic data in a large number of astrophysical problems. This paper presents the general characteristics of DI which are likely to allow improvements of the Doppler images of stellar surface structures as soon as interferometers with large apertures and baselines approaching 100 m are available.

Type
Session II: “Direct Mapping: The Last Frontier”
Information
Symposium - International Astronomical Union , Volume 176: Stellar Surface Structure , 1996 , pp. 181 - 190
Copyright
Copyright © Kluwer 1996 

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