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Preparing the exoplanet search with PRIMA: searching for reference stars and target characterization

Published online by Cambridge University Press:  01 October 2007

R. Geisler ,
J. Setiawan ,
Th. Henning ,
D. Queloz ,
A. Quirrenbach ,
R. Launhardt ,
A. Müller ,
S. Reffert  and
P. Weise
R. Geisler
Affiliation:
ZAH - Landessternwarte, Königstuhl 12, D-69117 Heidelberg, Germany Max-Planck-Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg, Germany Fellow of the IMPRS for Astronomy and Cosmic Physics at the University of Heidelberg, email: rgeisler@lsw.uni-heidelberg.de
J. Setiawan
Affiliation:
Max-Planck-Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg, Germany
Th. Henning
Affiliation:
Max-Planck-Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg, Germany
D. Queloz
Affiliation:
Observatoire Astronomique de l'Université de Genève, CH-1290 Sauverny, Switzerland
A. Quirrenbach
Affiliation:
ZAH - Landessternwarte, Königstuhl 12, D-69117 Heidelberg, Germany
R. Launhardt
Affiliation:
Max-Planck-Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg, Germany
A. Müller
Affiliation:
Max-Planck-Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg, Germany
S. Reffert
Affiliation:
ZAH - Landessternwarte, Königstuhl 12, D-69117 Heidelberg, Germany
P. Weise
Affiliation:
Max-Planck-Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg, Germany
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Abstract

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The PRIMA (Phase-Referenced Imaging and Micro-arcsecond Astrometry) facility at ESO VLTI (Paranal observatory) is expected to be commissioned in mid 2008. The ESPRI (Exoplanet Search with PRIMA) consortium is currently preparing an astrometric survey to search for extrasolar planets. To achieve the scientific goal of this survey, a careful selection of target and reference stars is necessary. Apart from catalog search and modelling, extensive and dedicated preparatory observations are indispensable. Here we present two aspects of the preparatory observation programs: A high dynamic range near infrared (NIR) imaging survey to search for astrometric reference stars around the preselected target stars and characterization of the target stars by using high-resolution spectroscopy.

Keywords

astrometrystars: planetary systemstechniques: interferometricphotometricspectroscopicradial velocities
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S249: Exoplanets: Detection, Formation and Dynamics , October 2007 , pp. 61 - 63
Copyright
Copyright © International Astronomical Union 2008

References

Launhardt, R., Henning, A., Queloz, D., Quirrenbach, T., Elias, N., Pepe, F., Reffert, S., Segransan, D., Setiawan, J., & ESPRI Consortium 2008a, The ESPRI project: Astrometric Exoplanet Search with PRIMA, These Proceedings.Google Scholar
Launhardt, R., Henning, A., Queloz, D., Quirrenbach, T., Elias, N., Pepe, F., Reffert, S., Segransan, D., Setiawan, J., & ESPRI Consortium 2008b, The ESPRI project: Narrow-angle astrometry with VLTI-PRIMA, Proc. IAUS, 248, in press.CrossRefGoogle Scholar