Published March 1, 2014 | Version v1
Journal article Metadata-only

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

Creators

  • 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)

Description

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.

Availability note (English)

Available from http://dx.doi.org/10.1088/0004-637X/783/1/3

Additional details

Identifiers

DOI
10.1088/0004-637X/783/1/3;

Publishing Information

Journal Title
Astrophysical Journal
Journal Volume
783
Journal Issue
1
Journal Page Range
[8 p.]
ISSN
0004-637X
CODEN
ASJOAB

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
46057735
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Descriptors DEI
DETECTION; DISTANCE; INCLINATION; MASS; ORBITS; RADIAL VELOCITY; SPECTROSCOPY; STARS
Descriptors DEC
VELOCITY