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Proceedings Paper

The ESPRI project: astrometric exoplanet search with PRIMA
Author(s): R. Launhardt; D. Queloz; Th. Henning; A. Quirrenbach; F. Delplancke; L. Andolfato; H. Baumeister; P. Bizenberger; H. Bleuler; B. Chazelas; F. Dérie; L. Di Lieto; T.P. Duc; O. Duvanel; N. M. Elias; M. Fluery; R. Geisler; D. Gillet; U. Graser; F. Koch; R. Köhler; C. Maire; D. Mégevand; Y. Michellod; J.-M. Moresmau; A. Müller; P. Müllhaupt; V. Naranjo; F. Pepe; S. Reffert; L. Sache; D. Ségransan; Y. Salvadé; T. Schulze-Hartung; J. Setiawan; G. Simond; D. Sosnowska; I. Stilz; B. Tubbs; K. Wagner; L. Weber; P. Weise; L. Zago
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Paper Abstract

PRIMA, the instrument for Phase-Referenced Imaging and Micro-arcsecond Astrometry at the VLTI, is currently being developed at ESO. PRIMA will implement the dual-feed capability, at first for two UTs or ATs, to enable simultaneous interferometric observations of two objects that are separated by up to 1 arcmin. PRIMA is designed to perform narrow-angle astrometry in K-band with two ATs as well as phase-referenced aperture synthesis imaging with instruments like Amber and Midi. In order to speed up the full implementation of the 10 microarcsec astrometric capability of the VLTI and to carry out a large astrometric planet search program, a consortium lead by the Observatoire de Genève, Max Planck Institute for Astronomy, and Landessternwarte Heidelberg, has built Differential Delay Lines for PRIMA and is developing the astrometric observation preparation and data reduction software. When the facility becomes fully operational in 2009, we will use PRIMA to carry out a systematic astrometric Exoplanet Search program, called ESPRI. In this paper, we describe the narrow-angle astrometry measurement principle, give an overview of the ongoing hardand software developments, and outline our anticipated astrometric exoplanet search program.

Paper Details

Date Published: 28 July 2008
PDF: 10 pages
Proc. SPIE 7013, Optical and Infrared Interferometry, 70132I (28 July 2008); doi: 10.1117/12.789318
Show Author Affiliations
R. Launhardt, Max Planck Institute for Astronomy (Germany)
D. Queloz, Observatoire Astronomique, l'Univ. de Genève (Switzerland)
Th. Henning, Max Planck Institute for Astronomy (Germany)
A. Quirrenbach, Landessternwarte Königstuhl (Germany)
F. Delplancke, European Southern Observatory (Germany)
L. Andolfato, European Southern Observatory (Germany)
H. Baumeister, Max Planck Institute for Astronomy (Germany)
P. Bizenberger, Max Planck Institute for Astronomy (Germany)
H. Bleuler, Ecole Polytechnique Fédérale (Switzerland)
B. Chazelas, Observatoire Astronomique de l'Univ. de Genève (Switzerland)
F. Dérie, European Southern Observatory (Germany)
L. Di Lieto, European Southern Observatory (Germany)
T.P. Duc, European Southern Observatory (Germany)
O. Duvanel, Ecole d’ingénieur ARC (Switzerland)
N. M. Elias, Max Planck Institute for Astronomy (Germany)
Landessternwarte Königstuhl (Germany)
M. Fluery, Observatoire Astronomique de l'Univ. de Genève (Switzerland)
R. Geisler, Landessternwarte Königstuhl (Germany)
D. Gillet, Ecole Polytechnique Fédérale (Switzerland)
U. Graser, Max Planck Institute for Astronomy (Germany)
F. Koch, European Southern Observatory (Germany)
R. Köhler, Max Planck Institute for Astronomy (Germany)
Landessternwarte Königstuhl (Germany)
C. Maire, Observatoire Astronomique de l'Univ. de Genève (Switzerland)
D. Mégevand, Observatoire Astronomique de l'Univ. de Genève (Switzerland)
Y. Michellod, Ecole Polytechnique Fédérale (Switzerland)
J.-M. Moresmau, European Southern Observatory (Germany)
A. Müller, Max Planck Institute for Astronomy (Germany)
P. Müllhaupt, Ecole Polytechnique Fédérale (Switzerland)
V. Naranjo, Max Planck Institute for Astronomy (Germany)
F. Pepe, Observatoire Astronomique, l'Univ. de Genève (Switzerland)
S. Reffert, Landessternwarte Königstuhl (Germany)
L. Sache, Ecole Polytechnique Fédérale (Switzerland)
D. Ségransan, Observatoire Astronomique, l'Univ. de Genève (Switzerland)
Y. Salvadé, Ecole d’ingénieur ARC (Switzerland)
T. Schulze-Hartung, Max Planck Institute for Astronomy (Germany)
J. Setiawan, Max Planck Institute for Astronomy (Germany)
G. Simond, Observatoire Astronomique de l'Univ. de Genève (Switzerland)
D. Sosnowska, Ecole Polytechnique Fédérale (Switzerland)
I. Stilz, Max Planck Institute for Astronomy (Germany)
Landessternwarte Königstuhl (Germany)
B. Tubbs, Max Planck Institute for Astronomy (Germany)
K. Wagner, Max Planck Institute for Astronomy (Germany)
L. Weber, Observatoire Astronomique de l'Univ. de Genève (Switzerland)
P. Weise, Max Planck Institute for Astronomy (Germany)
L. Zago, Centre Suisse d’Electronique et Microtechnique (CSEM) (Switzerland)


Published in SPIE Proceedings Vol. 7013:
Optical and Infrared Interferometry
Markus Schöller; William C. Danchi; Françoise Delplancke, Editor(s)

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