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Proceedings Paper

Narrow-angle astrometry with PRIMA
Author(s): J. Sahlmann; D. Ségransan; A. Mérand; N. Zimmerman; R. Abuter; B. Chazelas; F. Delplancke; T. Henning; A. Kaminski; R. Köhler; R. Launhardt; M. Mohler; F. Pepe; D. Queloz; A. Quirrenbach; S. Reffert; C. Schmid; N. Schuhler; T. Schulze-Hartung
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Paper Abstract

The Extrasolar Planet Search with PRIMA project (ESPRI) aims at characterising and detecting extrasolar planets by measuring the host star's reflex motion using the narrow-angle astrometry capability of the PRIMA facility at the Very Large Telescope Interferometer. A first functional demonstration of the astrometric mode was achieved in early 2011. This marked the start of the astrometric commissioning phase with the purpose of characterising the instrument's performance, which ultimately has to be sufficient for exoplanet detection. We show results obtained from the observation of bright visual binary stars, which serve as test objects to determine the instrument's astrometric precision, its accuracy, and the plate scale. Finally, we report on the current status of the ESPRI project, in view of starting its scientific programme.

Paper Details

Date Published: 12 September 2012
PDF: 11 pages
Proc. SPIE 8445, Optical and Infrared Interferometry III, 84450S (12 September 2012); doi: 10.1117/12.926214
Show Author Affiliations
J. Sahlmann, Observatoire de Genève, Univ. de Genève (Switzerland)
D. Ségransan, Observatoire de Genève, Univ. de Genève (Switzerland)
A. Mérand, European Southern Observatory (Chile)
N. Zimmerman, Max-Planck-Institut für Astronomie (Germany)
R. Abuter, European Southern Observatory (Germany)
B. Chazelas, Observatoire de Genève, Univ. de Genève (Switzerland)
F. Delplancke, European Southern Observatory (Germany)
T. Henning, Max-Planck-Institut für Astronomie (Germany)
A. Kaminski, ZAH Landessternwarte (Germany)
R. Köhler, Max-Planck-Institut für Astronomie (Germany)
ZAH Landessternwarte (Germany)
R. Launhardt, Max-Planck-Institut für Astronomie (Germany)
M. Mohler, Max-Planck-Institut für Astronomie (Germany)
F. Pepe, Observatoire de Genève (Switzerland)
D. Queloz, Observatoire de Genève (Switzerland)
A. Quirrenbach, ZAH Landessternwarte (Germany)
S. Reffert, ZAH Landessternwarte (Germany)
C. Schmid, European Southern Observatory (Germany)
N. Schuhler, European Southern Observatory (Chile)
T. Schulze-Hartung, Max-Planck-Institut für Astronomie (Germany)

Published in SPIE Proceedings Vol. 8445:
Optical and Infrared Interferometry III
Françoise Delplancke; Jayadev K. Rajagopal; Fabien Malbet, Editor(s)

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