Massive binary stars from an HST/FGS survey Virtual Observatory Resource

Authors
  1. Aldoretta E.J.
  2. Caballero-Nieves S.M.
  3. Gies D.R.
  4. Nelan E.P.
  5. Wallace D.J.,Hartkopf W.I.
  6. Henry T.J.
  7. Jao W.-C.
  8. Apellaniz J.M.
  9. Mason B.D.,Moffat A.F.J.
  10. Norris R.P.
  11. Richardson N.D.
  12. Williams S.J.
  13. Published by
    CDS
Abstract

We present the results of an all-sky survey made with the Fine Guidance Sensor on the Hubble Space Telescope to search for angularly resolved binary systems among massive stars. The sample of 224 stars is comprised mainly of Galactic O- and B-type stars and luminous blue variables, plus a few luminous stars in the Large Magellanic Cloud. The FGS TRANS mode observations are sensitive to the detection of companions with an angular separation between 0.01'' and 1.0'' and brighter than {delta}m=5. The FGS observations resolved 52 binary and 6 triple star systems and detected partially resolved binaries in 7 additional targets (43 of these are new detections). These numbers yield a companion detection frequency of 29% for the FGS survey. We also gathered literature results on the numbers of close spectroscopic binaries and wider astrometric binaries among the sample, and we present estimates of the frequency of multiple systems and the companion frequency for subsets of stars residing in clusters and associations, field stars, and runaway stars. These results confirm the high multiplicity fraction, especially among massive stars in clusters and associations. We show that the period distribution is approximately flat in increments of logP. We identify a number of systems of potential interest for long-term orbital determinations, and we note the importance of some of these companions for the interpretation of the radial velocities and light curves of close binaries that have third companions.

Keywords
  1. surveys
  2. multiple-stars
  3. spectroscopic-binary-stars
  4. o-stars
  5. apparent-magnitude
  6. stellar-associations
Bibliographic source Bibcode
2015AJ....149...26A
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/149/26
IVOA Identifier IVOID
ivo://CDS.VizieR/J/AJ/149/26
Document Object Identifer DOI
doi:10.26093/cds/vizier.51490026

Access

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http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/149/26
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/149/26
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/149/26
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For use with a cone search client (e.g., TOPCAT).
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https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/149/26/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/149/26/table1?

History

2015-04-01T12:25:45Z
Resource record created
2015-04-01T12:25:45Z
Created
2022-11-21T11:27:36Z
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