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An Adaptive Optics Survey for Companions to Stars with Extra-Solar Planets

Published online by Cambridge University Press:  26 May 2016

James P. Lloyd
Affiliation:
Department of Astronomy, University of California, Berkeley, CA 94720, USA
Michael C. Liu
Affiliation:
Department of Astronomy, University of California, Berkeley, CA 94720, USA
James R. Graham
Affiliation:
Department of Astronomy, University of California, Berkeley, CA 94720, USA
Melissa Enoch
Affiliation:
Department of Astronomy, University of California, Berkeley, CA 94720, USA
Paul Kalas
Affiliation:
Department of Astronomy, University of California, Berkeley, CA 94720, USA
Geoffrey W. Marcy
Affiliation:
Department of Astronomy, University of California, Berkeley, CA 94720, USA
Debra Fischer
Affiliation:
Department of Astronomy, University of California, Berkeley, CA 94720, USA
Jennifer Patience
Affiliation:
Institute of Geophysics and Planetary Physics, Lawrence Livermore National Laboratory, Livermore, CA 95064, USA
Bruce Macintosh
Affiliation:
Institute of Geophysics and Planetary Physics, Lawrence Livermore National Laboratory, Livermore, CA 95064, USA
Donald T. Gavel
Affiliation:
Institute of Geophysics and Planetary Physics, Lawrence Livermore National Laboratory, Livermore, CA 95064, USA
Scot S. Olivier
Affiliation:
Institute of Geophysics and Planetary Physics, Lawrence Livermore National Laboratory, Livermore, CA 95064, USA
Claire E. Max
Affiliation:
Institute of Geophysics and Planetary Physics, Lawrence Livermore National Laboratory, Livermore, CA 95064, USA
Russel White
Affiliation:
Department of Physics and Astronomy, University of California, Los Angeles, CA 90095, USA
Andrea M. Ghez
Affiliation:
Department of Physics and Astronomy, University of California, Los Angeles, CA 90095, USA
Ian S. McLean
Affiliation:
Department of Physics and Astronomy, University of California, Los Angeles, CA 90095, USA

Abstract

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We have undertaken an adaptive optics imaging survey of extra-solar planetary systems and stars showing interesting radial velocity trends from high precision radial velocity searches. Adaptive Optics increases the resolution and dynamic range of an image, substantially improving the detectability of faint close companions. This survey is sensitive to objects less luminous than the bottom of the main sequence at separations as close as 1″. We have detected stellar companions to the planet bearing stars HD 114762 and Tau Boo. We have also detected a companion to the non-planet bearing star 16 Cyg A.

Type
Part V: Discovery and study of extrasolar planets - future
Copyright
Copyright © Astronomical Society of the Pacific 2004 

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