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The ESPRI project: narrow-angle astrometry with VLTI-PRIMA

Published online by Cambridge University Press:  01 October 2007

R. Launhardt ,
T. Henning ,
D. Queloz ,
A. Quirrenbach ,
F. Delplancke ,
N. M. Elias II ,
F. Pepe ,
S. Reffert ,
D. Ségransan  and
J. Setiawan
...Show all authors
R. Launhardt*
Affiliation:
Max-Planck-Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany
T. Henning
Affiliation:
Max-Planck-Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany
D. Queloz
Affiliation:
Observatoire Astronomique de l'Universitè de Genève, 1290 Sauverny, Switzerland
A. Quirrenbach
Affiliation:
Landessternwarte Königstuhl, 69117 Heidelberg, Germany
F. Delplancke
Affiliation:
European Southern Observatory (ESO), Karl-Schwazschild-Str. 2, 85748 Garching
N. M. Elias II
Affiliation:
Max-Planck-Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany Landessternwarte Königstuhl, 69117 Heidelberg, Germany
F. Pepe
Affiliation:
Observatoire Astronomique de l'Universitè de Genève, 1290 Sauverny, Switzerland
S. Reffert
Affiliation:
Landessternwarte Königstuhl, 69117 Heidelberg, Germany
D. Ségransan
Affiliation:
Observatoire Astronomique de l'Universitè de Genève, 1290 Sauverny, Switzerland
J. Setiawan
Affiliation:
Max-Planck-Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany
R. Tubbs
Affiliation:
Max-Planck-Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany
*
*email: [email protected]
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Abstract

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We describe the ongoing hardware and software developments that shall enable the ESO VLTI to perform narrow-angle differential delay astrometry in K-band with an accuracy of up to 10 μarcsec. The ultimate goal of these efforts is to perform an astrometric search for extrasolar planets around nearby stars.

Keywords

instrumentation: interferometerstechniques: high angular resolutiontechniques: interferometricastrometryplanetary systemsinfrared: stars
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S248: A Giant Step: from Milli- to Micro-arcsecond Astrometry , October 2007 , pp. 417 - 420
Copyright
Copyright © International Astronomical Union 2008

References

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