THE PHASES DIFFERENTIAL ASTROMETRY DATA ARCHIVE. III. LIMITS TO TERTIARY COMPANIONS
- Department of Mathematics and Physics, College of Arts and Sciences, Tennessee State University, Boswell Science Hall, Nashville, TN 37209 (United States)
- Draper Laboratory, 555 Technology Square, Cambridge, MA 02139-3563 (United States)
- Division of Physics, Mathematics and Astronomy, 105-24, California Institute of Technology, Pasadena, CA 91125 (United States)
- Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, Rabianska 8, 87-100 Torun (Poland)
- MIT Kavli Institute for Astrophysics and Space Research, MIT Department of Physics, 70 Vassar Street, Cambridge, MA 02139 (United States)
- Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109 (United States)
The Palomar High-precision Astrometric Search for Exoplanet Systems (PHASES) monitored 51 subarcsecond binary systems to evaluate whether tertiary companions as small as Jovian planets orbited either the primary or secondary stars, perturbing their otherwise smooth Keplerian motions. Twenty-one of those systems were observed 10 or more times and show no evidence of additional companions. A new algorithm is presented for identifying astrometric companions and establishing the (companion mass)-(orbital period) combinations that can be excluded from existence with high confidence based on the PHASES observations, and the regions of mass-period phase space being excluded are presented for 21 PHASES binaries.
- OSTI ID:
- 21443176
- Journal Information:
- Astronomical Journal (New York, N.Y. Online), Vol. 140, Issue 6; Other Information: DOI: 10.1088/0004-6256/140/6/1631; ISSN 1538-3881
- Country of Publication:
- United States
- Language:
- English
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