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Title: The orbits of the triple-star system 1 geminorum from phases differential astrometry and spectroscopy

We have used precise differential astrometry from the Palomar High-precision Astrometric Search for Exoplanet Systems project and radial-velocity measurements covering a time span of 40 yr to determine the orbital parameters of the 1 Geminorum triple system. We present the first detection of the spectral lines of the third component of the system, together with precise mass (0.5%) and distance (0.15%) determinations for this system. In addition, our astrometry allows us to make the first determination of the mutual inclination of the orbits.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ; ;  [5] ;  [6] ; ;  [7] ;  [8]
  1. The Charles Stark Draper Laboratory, Inc., 555 Technology Square, Cambridge, MA 02139 (United States)
  2. Department of Mathematical Sciences, College of Engineering, Tennessee State University, Boswell Science Hall, Nashville, TN 37209 (United States)
  3. The Observatories, Institute of Astronomy, Madingley Road, Cambridge CB3 0HA (United Kingdom)
  4. Department of Physics and Astronomy, University of Victoria, BC V8W 3P6 (Canada)
  5. Center of Excellence in Information Systems, Tennessee State University, 3500 John A. Merritt Boulevard, Box 9501, Nashville, TN 37209 (United States)
  6. 7050 Bakerville Road, Waverly, TN 37185 (United States)
  7. Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109 (United States)
  8. Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, Rabianska 8, 87-100 Torun (Poland)
Publication Date:
OSTI Identifier:
22351394
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 783; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; DETECTION; DISTANCE; INCLINATION; MASS; ORBITS; RADIAL VELOCITY; SPECTROSCOPY; STARS