Accurate astrometry & RVs of 4 multiple systems Virtual Observatory Resource

Authors
  1. Tokovinin A.
  2. Latham D.W.
  3. Published by
    CDS
Abstract

This work extends the still modest number of multiple stars with known relative orbit orientation. Accurate astrometry and radial velocities are used jointly to compute or update outer and inner orbits in three nearby triple systems, HIP 101955 (orbital periods 38.68 and 2.51yr), HIP 103987 (19.20 and 1.035yr), HIP 111805 (30.13 and 1.50yr), and in one quadruple system, HIP 2643 (periods 70.3, 4.85, and 0.276yr), all composed of solar-type stars. The masses are estimated from the absolute magnitudes and checked using the orbits. The ratios of outer to inner periods (from 14 to 20) and the eccentricities of the outer orbits are moderate. These systems are dynamically stable, but not very far from the stability limit. In three systems, all orbits are approximately coplanar and have small eccentricity, while in HIP101955 the inner orbit with e=0.6 is highly inclined.

Keywords
  1. multiple-stars
  2. radial-velocity
  3. spectroscopic-binary-stars
Bibliographic source Bibcode
2017ApJ...838...54T
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/838/54
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/838/54
Document Object Identifer DOI
doi:10.26093/cds/vizier.18380054

Access

Web browser access HTML
https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/838/54
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/838/54
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/838/54
IVOA Table Access TAP
https://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/838/54/systems?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/838/54/systems?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/838/54/systems?

History

2017-12-04T10:50:45Z
Resource record created
2017-12-04T10:50:45Z
Created
2018-03-12T08:29:56Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr