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Results of the NaCo Large Program: probing the occurrence of exoplanets and brown dwarfs at wide orbit

Published online by Cambridge University Press:  06 January 2014

A. Vigan
Affiliation:
Aix Marseille Université, CNRS, LAM (Laboratoire d'Astrophysique de Marseille) UMR 7326, 13388, Marseille, France. email: arthur.vigan@oamp.fr
G. Chauvin
Affiliation:
UJF-Grenoble 1 / CNRS-INSU, IPAG, UMR 5274, Grenoble, F-38041, France
M. Bonavita
Affiliation:
INAF - Osservatorio Astronomico di Padova, Vicolo dell' Osservatorio 5, 35122, Padova, Italy
S. Desidera
Affiliation:
INAF - Osservatorio Astronomico di Padova, Vicolo dell' Osservatorio 5, 35122, Padova, Italy
M. Bonnefoy
Affiliation:
Max Planck Instiute für Astronomy, Königsthul 17, D-69117 Heidelberg, Germany
D. Mesa
Affiliation:
INAF - Osservatorio Astronomico di Padova, Vicolo dell' Osservatorio 5, 35122, Padova, Italy
J.-L. Beuzit
Affiliation:
UJF-Grenoble 1 / CNRS-INSU, IPAG, UMR 5274, Grenoble, F-38041, France
J.-C. Augereau
Affiliation:
UJF-Grenoble 1 / CNRS-INSU, IPAG, UMR 5274, Grenoble, F-38041, France
B. Biller
Affiliation:
Max Planck Instiute für Astronomy, Königsthul 17, D-69117 Heidelberg, Germany
A. Boccaletti
Affiliation:
LESIA, Observatoire de Paris, CNRS, University Pierre et Marie Curie Paris 6 and University Denis Diderot Paris 7, 5 place Jules Janssen, 92195 Meudon, France
E. Brugaletta
Affiliation:
INAF - Osservatorio Astrofisico di Catania, via S. Sofia 78, 95123 Catania, Italy
E. Buenzli
Affiliation:
Institute for Astronomy, ETH Zurich, Wolfgang-Pauli-Strasse 27, 8093 Zurich, Switzerland
J. Carson
Affiliation:
College of Charleston, Department of Physics & Astronomy, USA
E. Covino
Affiliation:
INAF - Osservatorio Astronomico di Napoli, Salita Moiariello 16, 80131 Napoli, Italy
P. Delorme
Affiliation:
UJF-Grenoble 1 / CNRS-INSU, IPAG, UMR 5274, Grenoble, F-38041, France
A. Eggenberger
Affiliation:
UJF-Grenoble 1 / CNRS-INSU, IPAG, UMR 5274, Grenoble, F-38041, France
M. Feldt
Affiliation:
Max Planck Instiute für Astronomy, Königsthul 17, D-69117 Heidelberg, Germany
J. Hagelberg
Affiliation:
Geneva Observatory, Univ. of Geneva, Chemin des Mailettes 51, 1290, Versoix, Switzerland
T. Henning
Affiliation:
Max Planck Instiute für Astronomy, Königsthul 17, D-69117 Heidelberg, Germany
A.-M. Lagrange
Affiliation:
UJF-Grenoble 1 / CNRS-INSU, IPAG, UMR 5274, Grenoble, F-38041, France
A. Lanzafame
Affiliation:
INAF - Osservatorio Astrofisico di Catania, via S. Sofia 78, 95123 Catania, Italy
F. Ménard
Affiliation:
UJF-Grenoble 1 / CNRS-INSU, IPAG, UMR 5274, Grenoble, F-38041, France
S. Messina
Affiliation:
INAF - Osservatorio Astrofisico di Catania, via S. Sofia 78, 95123 Catania, Italy
M. Meyer
Affiliation:
Institute for Astronomy, ETH Zurich, Wolfgang-Pauli-Strasse 27, 8093 Zurich, Switzerland
G. Montagnier
Affiliation:
Observatoire de Haute-Provence, CNRS/OAMP, 04870 Saint-Michel-l'Observatoire, France
C. Mordasini
Affiliation:
Max Planck Instiute für Astronomy, Königsthul 17, D-69117 Heidelberg, Germany
D. Mouillet
Affiliation:
UJF-Grenoble 1 / CNRS-INSU, IPAG, UMR 5274, Grenoble, F-38041, France
C. Moutou
Affiliation:
Aix Marseille Université, CNRS, LAM (Laboratoire d'Astrophysique de Marseille) UMR 7326, 13388, Marseille, France. email: arthur.vigan@oamp.fr
L. Mugnier
Affiliation:
Onera - The French Aerospace Lab, 92322, Chatillon, France
S. P. Quanz
Affiliation:
Institute for Astronomy, ETH Zurich, Wolfgang-Pauli-Strasse 27, 8093 Zurich, Switzerland
M. Reggiani
Affiliation:
Institute for Astronomy, ETH Zurich, Wolfgang-Pauli-Strasse 27, 8093 Zurich, Switzerland
D. Ségransan
Affiliation:
Geneva Observatory, Univ. of Geneva, Chemin des Mailettes 51, 1290, Versoix, Switzerland
C. Thalmann
Affiliation:
University of Amsterdam, Postbus 94249, 1090 GE, Amsterdam, The Netherlands
R. Waters
Affiliation:
University of Amsterdam, Postbus 94249, 1090 GE, Amsterdam, The Netherlands
A. Zurlo
Affiliation:
Aix Marseille Université, CNRS, LAM (Laboratoire d'Astrophysique de Marseille) UMR 7326, 13388, Marseille, France. email: arthur.vigan@oamp.fr
Corresponding
E-mail address:
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Abstract

Over the past decade, a growing number of deep imaging surveys have started to provide meaningful constraints on the population of extrasolar giant planets at large orbital separation. Primary targets for these surveys have been carefully selected based on their age, distance and spectral type, and often on their membership to young nearby associations where all stars share common kinematics, photometric and spectroscopic properties. The next step is a wider statistical analysis of the frequency and properties of low mass companions as a function of stellar mass and orbital separation. In late 2009, we initiated a coordinated European Large Program using angular differential imaging in the H band (1.66 μm) with NaCo at the VLT. Our aim is to provide a comprehensive and statistically significant study of the occurrence of extrasolar giant planets and brown dwarfs at large (5-500 AU) orbital separation around ~150 young, nearby stars, a large fraction of which have never been observed at very deep contrast. The survey has now been completed and we present the data analysis and detection limits for the observed sample, for which we reach the planetary-mass domain at separations of ≳50 AU on average. We also present the results of the statistical analysis that has been performed over the 75 targets newly observed at high-contrast. We discuss the details of the statistical analysis and the physical constraints that our survey provides for the frequency and formation scenario of planetary mass companions at large separation.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2013 

References

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Results of the NaCo Large Program: probing the occurrence of exoplanets and brown dwarfs at wide orbit
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