THE PHASES DIFFERENTIAL ASTROMETRY DATA ARCHIVE. II. UPDATED BINARY STAR ORBITS AND A LONG PERIOD ECLIPSING BINARY

Journal Article · Wed Dec 15 00:00:00 EST 2010 · Astronomical Journal (New York, N.Y. Online)

DOI:https://doi.org/10.1088/0004-6256/140/6/1623· OSTI ID:21443175

Muterspaugh, Matthew W; O'Connell, J ^[1]; Hartkopf, William I ^[2]; Lane, Benjamin F ^[3]; Williamson, M ^[4]; Kulkarni, S R ^[5]; Konacki, Maciej ^[6]; Burke, Bernard F ^[7]; Colavita, M M; Shao, M ^[8]

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1. Department of Mathematics and Physics, College of Arts and Sciences, Tennessee State University, Boswell Science Hall, Nashville, TN 37209 (United States)
2. U.S. Naval Observatory, 3450 Massachusetts Avenue, NW, Washington, DC 20392-5420 (United States)
3. Draper Laboratory, 555 Technology Square, Cambridge, MA 02139-3563 (United States)
4. Tennessee State University, Center of Excellence in Information Systems, 3500 John A. Merritt Blvd., Box No. 9501, Nashville, TN 37209-1561 (United States)
5. Division of Physics, Mathematics and Astronomy, 105-24 California Institute of Technology, Pasadena, CA 91125 (United States)
6. Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, Rabianska 8, 87-100 Torun (Poland)
7. MIT Kavli Institute for Astrophysics and Space Research, MIT Department of Physics, 70 Vassar Street, Cambridge, MA 02139 (United States)
8. Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109 (United States)

Differential astrometry measurements from the Palomar High-precision Astrometric Search for Exoplanet Systems have been combined with lower precision single-aperture measurements covering a much longer timespan (from eyepiece measurements, speckle interferometry, and adaptive optics) to determine improved visual orbits for 20 binary stars. In some cases, radial velocity observations exist to constrain the full three-dimensional orbit and determine component masses. The visual orbit of one of these binaries-{alpha} Com (HD 114378)-shows that the system is likely to have eclipses, despite its very long period of 26 years. The next eclipse is predicted to be within a week of 2015 January 24.

• OSTI ID: 21443175
• Journal Information: Astronomical Journal (New York, N.Y. Online), Vol. 140, Issue 6; Other Information: DOI: 10.1088/0004-6256/140/6/1623; ISSN 1538-3881
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
BINARY STARS
ECLIPSE
INTERFEROMETRY
ORBITS
RADIAL VELOCITY
STARS
VELOCITY