The PHASES Differential Astrometry Data Archive. I. Measurements and Description
Matthew W. Muterspaugh (1), Benjamin F. Lane (2), S. R. Kulkarni (3),, Maciej Konacki (4), Bernard F. Burke (5), M. M. Colavita (6), M. Shao (6),, Sloane J. Wiktorowicz (7), J. O'Connell (1) ((1) Tennessee State University,, (2) Draper Laboratory, (3) Caltech
TL;DR
This paper presents high-precision astrometric measurements of binary and multiple star systems using the PHASES project, including orbit determinations and companion discoveries, based on data from the Palomar Testbed Interferometer and Keck Adaptive Optics.
Contribution
It provides a comprehensive data archive of differential astrometry measurements and infrared photometry for 51 binary systems, enhancing the study of stellar system geometries and exoplanet detection.
Findings
Precise binary star orbits determined for multiple systems.
Discovery of faint astrometric companions possibly indicating exoplanets.
Infrared photometry data supporting astrometric analysis.
Abstract
The Palomar High-precision Astrometric Search for Exoplanet Systems (PHASES) monitored 51 sub-arcsecond binary systems to determine precision binary orbits, study the geometries of triple and quadruple star systems, and discover previously unknown faint astrometric companions as small as giant planets. PHASES measurements made with the Palomar Testbed Interferometer (PTI) from 2002 until PTI ceased normal operations in late 2008 are presented. Infrared differential photometry of several PHASES targets were measured with Keck Adaptive Optics and are presented.
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Taxonomy
TopicsStellar, planetary, and galactic studies · Astronomy and Astrophysical Research · Adaptive optics and wavefront sensing