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Extrasolar Planets with AMBER/VLTI, What can we expect from current performances?

Published online by Cambridge University Press:  02 May 2006

F. Millour ,
M. Vannier ,
R. G. Petrov ,
B. Lopez  and
F. Rantakyrö
F. Millour
Affiliation:
Laboratoire Universitaire d'Astrophysique de Nice - U.M.R. 6525, Université de Nice-Sophia Antipolis, Parc Valrose, 06108 Nice Cedex 02, France Laboratoire d'Astrophysique de Grenoble, U.M.R. 5571, Université Joseph Fourier/C.N.R.S., BP 53, F-38041 Grenoble Cedex 9, France
M. Vannier
Affiliation:
European Southern Observatory, Casilla 19001, Santiago 19, Chile
R. G. Petrov
Affiliation:
Laboratoire Universitaire d'Astrophysique de Nice - U.M.R. 6525, Université de Nice-Sophia Antipolis, Parc Valrose, 06108 Nice Cedex 02, France
B. Lopez
Affiliation:
Laboratoire Gemini, U.M.R. 6203, Observatoire de la Côte d'Azur/C.N.R.S., Avenue Copernic, 06130 Grasse, France
F. Rantakyrö
Affiliation:
European Southern Observatory, Casilla 19001, Santiago 19, Chile
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Abstract

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We present the current performances of the AMBER / VLTI instrument in terms of differential observables (differential phase and differential visibility) and show that we are already able to reach a sufficient precision for very low mass companions spectroscopy and mass characterization. We perform some extrapolations with the knowledge of the current limitations of the instrument facility.

We show that with the current setup of the AMBER instrument, we can already reach $3\sigma = 10^{-3}$ radians and have the potential to some low mass companions characterization (Brown dwarves or hypothetical very hot Extra Solar Giant Planets). With some upgrades of the VLTI infrastructure, improvements of the instrument calibration and improvements of the observing strategy, we will be able to reach $3\sigma = 10^{-4}$ radians and will have the potential to perform Extra Solar Giant Planets spectroscopy and mass characterization.

Keywords

techniques: interferometricstars: planetary systemsinstrumentation: high angular resolution
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 1 , Colloquium C200: Direct Imaging of Exoplanets: Science & Techniques , October 2005 , pp. 291 - 296
Copyright
© 2006 International Astronomical Union