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Strategy for extrasolar planets observations with color-differential phase with the VLTI focal instrument AMBER

Published online by Cambridge University Press:  28 May 2003

R. G. Petrov
Affiliation:
Université de Nice-Sophia Antipolis, Parc Valrose, 06108 Nice, France
M. Vannier
Affiliation:
Université de Nice-Sophia Antipolis, Parc Valrose, 06108 Nice, France
B. Lopez
Affiliation:
Observatoire de la Côte d'Azur, BP. 4229, 06034, Nice Cedex 4, France
Y. Bresson
Affiliation:
Observatoire de la Côte d'Azur, BP. 4229, 06034, Nice Cedex 4, France
S. Robbe-Dubois
Affiliation:
Université de Nice-Sophia Antipolis, Parc Valrose, 06108 Nice, France
S. Lagarde
Affiliation:
Observatoire de la Côte d'Azur, BP. 4229, 06034, Nice Cedex 4, France
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Abstract

This paper describes our strategy and presents the specific additional calibration tool added to the near-infrared focal instrument AMBER of the Very Large Telescope Interferometer, to achieve the direct detection of extrasolar planets with color-differential interferometry. The measurement of the angular orbits, masses and spectra of hot giant extra solar planets can be achieved for Jupiter size planets up to 0.2 a.u. away from a 10 pc distant star, if it is limited only by photon, detector and background noises. However, this requires an extremely good control and calibration of the atmospheric and instrumental stability.

Type
Research Article
Copyright
© EAS, EDP Sciences, 2003

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