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Proceedings Paper

Scientific results from high-precision astrometry at the Palomar Testbed Interferometer
Author(s): Matthew W. Muterspaugh; Benjamin F. Lane; Maciej Konacki; B. F. Burke; M. M. Colavita; S. R. Kulkarni; M. Shao
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Paper Abstract

A new observing mode for the Palomar Testbed Interferometer was developed in 2002-2003 which enables differential astrometry at the level of 20 micro-arcseconds (μas) for binary systems with separations of several hundred milli-arcseconds (mas). This phase-referenced mode is the basis of the Palomar High-precision Astrometric Search for Exoplanet Systems (PHASES), a search for giant planets orbiting either the primary or secondary star in fifty binary systems. We present the first science results from the PHASES search. The properties of the stars comprising binary systems are determined to high precision. The mutual inclinations of several hierarchical triple star systems have been determined. We will present upper limits constraining the the existence of giant planets in a few of the target systems.

Paper Details

Date Published: 27 June 2006
PDF: 8 pages
Proc. SPIE 6268, Advances in Stellar Interferometry, 62680F (27 June 2006); doi: 10.1117/12.670688
Show Author Affiliations
Matthew W. Muterspaugh, California Institute of Technology (United States)
Benjamin F. Lane, Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology (United States)
Maciej Konacki, Nicolaus Copernicus Astronomical Ctr. (Poland)
B. F. Burke, Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology (United States)
M. M. Colavita, Jet Propulsion Lab. (United States)
S. R. Kulkarni, California Institute of Technology (United States)
M. Shao, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 6268:
Advances in Stellar Interferometry
John D. Monnier; Markus Schöller; William C. Danchi, Editor(s)

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