Scientific results from high-precision astrometry at the Palomar Testbed Interferometer

@inproceedings{Muterspaugh2006ScientificRF,
  title={Scientific results from high-precision astrometry at the Palomar Testbed Interferometer},
  author={Matthew W. Muterspaugh and Benjamin F. Lane and Maciej Konacki and Bernard F. Burke and M. Mark Colavita and Shrinivas R. Kulkarni and Michael Shao},
  booktitle={SPIE Astronomical Telescopes + Instrumentation},
  year={2006}
}
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… 
Recent progress at the Palomar Testbed Interferometer
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    SPIE Astronomical Telescopes + Instrumentation
  • 2006
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References

SHOWING 1-10 OF 27 REFERENCES
Differential Astrometry of Subarcsecond Scale Binaries at the Palomar Testbed Interferometer
We have used the Palomar Testbed Interferometer to perform very high precision differential astrometry on the 025 separation binary star HD 171779. In 70 minutes of observation, we achieve a
PHASES High-Precision Differential Astrometry of δ Equulei
Delta Equulei is among the most well-studied nearby binary star systems. Results of its observation have been applied to a wide range of fundamental studies of binary systems and stellar
Phases differential astrometry and the mutual inclination of the v819 herculis triple star system
V819 Herculis is a well-studied triple star system consisting of a wide pair with 5.5 year period, one component of which is a 2.2-day period eclipsing single-line spectroscopic binary. Differential
Palomar Testbed Interferometer
The Palomar Testbed Interferometer (PTI) is an infrared, phase-tracking interferometer in operation at Palomar Mountain since July 1995. It was funded by NASA for the purpose of developing techniques
Navy Prototype Optical Interferometer Observations of the Double Stars Mizar A and Matar
We present a detailed analysis of two spectroscopic binaries based on new observations obtained with the Navy Prototype Optical Interferometer (NPOI). While the data calibration needs refinement,
Phase-referenced Stellar Interferometry at the Palomar Testbed Interferometer
We discuss implementation and testing of phase referencing at the Palomar Testbed Interferometer. A new instrument configuration provides a coherent integration of 10 or 20 ms on a bright star while
A Planetary Companion to γ Cephei A
We report on the detection of a planetary companion in orbit around the primary star of the binary system γ Cephei. High-precision radial velocity measurements using four independent data sets
Multi-order TODCOR: Application to observations taken with the CORALIE echelle spectrograph - II. A planet in the system HD 41004
In previous works we reported the detection of a brown-dwarf companion orbiting the faint stellar component of the visual binary HD 41004. This had been achieved by applying the multi-order
PHASES Differential Astrometry and Iodine Cell Radial Velocities of the κ Pegasi Triple Star System
κ Pegasi is a well-known, nearby triple star system. It consists of a "wide" pair with semimajor axis = 235 mas, one component of which is a single-line spectroscopic binary (semimajor axis = 2.5
Multi-order TODCOR: application to observations taken with the CORALIE echelle spectrograph I. The system HD 41004 ⋆,⋆⋆
This paper presents an application of the TwO-Dimensional CORrelation (TODCOR) algorithm to multi-order spec- tra. The combination of many orders enables the detection and measurement of the radial
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