NASA ADS Astronomy Abstract Service

Title:
The calibration of interferometric visibilities obtained with single-mode optical interferometers. Computation of error bars and correlations
Authors:
Perrin, G.
Affiliation:
LESIA, FRE 2461, Observatoire de Paris, section de Meudon, 5 place Jules Janssen, 92190 Meudon, France
Journal:
Astronomy and Astrophysics, v.400, p.1173-1181 (2003) (A&A Homepage)
Publication Date:
03/2003
Origin:
A&A
A&A Keywords:
techniques: interferometric, methods: data reduction
Abstract Copyright:
(c) 2003: Astronomy & Astrophysics
Bibliographic Code:
2003A&A...400.1173P

Abstract

I present in this paper a method to calibrate data obtained from optical and infrared interferometers. I show that correlated noises and errors need to be taken into account for a very good estimate of individual error bars but also when model fitting the data to derive meaningful model parameters whose accuracies are not overestimated. It is also shown that under conditions of high correlated noise, faint structures of the source can be detected. This point is important to define strategies of calibration for difficult programs such as exoplanet detection. The limits of validity of the assumptions on the noise statistics are discussed.

Appendix A is only available in electronic form at http://www.edpsciences.org