From binaries to multiples. II. Statistical data Virtual Observatory Resource

Authors
  1. Tokovinin A.
  2. Published by
    CDS
Abstract

Statistics of hierarchical multiplicity among solar-type dwarfs are studied using the distance-limited sample of 4847 targets presented in the accompanying Paper I. Known facts about binaries (multiplicity fraction 0.46, lognormal period distribution with median period 100yr and logarithmic dispersion 2.4, and nearly uniform mass-ratio distribution independent of the period) are confirmed with a high statistical significance. The fraction of hierarchies with three or more components is 0.13+/-0.01, and the fractions of targets with n=1,2,3,... components are 54:33:8:4:1. Subsystems in the secondary components are almost as frequent as in the primary components, but in half of such cases both inner pairs are present. The high frequency of those 2+2 hierarchies (4%) suggests that both inner pairs were formed by a common process. The statistics of hierarchies can be reproduced by simulations, assuming that the field is a mixture coming from binary-rich and binary-poor environments. Periods of the outer and inner binaries are selected recursively from the same lognormal distribution, subject to the stability constraint and accounting for the correlation between inner subsystems. The simulator can be used to evaluate the frequency of multiple systems with specified parameters. However, it does not reproduce the observed excess of inner periods shorter than 10days, caused by tidal evolution.

Keywords
  1. multiple-stars
  2. dwarf-stars
  3. f-stars
  4. stellar-masses
Bibliographic source Bibcode
2014AJ....147...87T
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/147/87
IVOA Identifier IVOID
ivo://CDS.VizieR/J/AJ/147/87
Document Object Identifer DOI
doi:10.26093/cds/vizier.51470087

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/147/87
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/147/87
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/147/87
IVOA Table Access TAP
http://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).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/147/87/table1?
https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/147/87/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/147/87/table1?

History

2014-11-14T15:23:04Z
Resource record created
2014-11-14T15:23:04Z
Created
2017-09-27T05:55:47Z
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