Debris disks and multiplicity within the 75pc volume-limited A-Star (VAST) survey

R. J. De Rosa, B. Smith, J. Bulger, Jennifer Patience, C. Marois, I. Song, B. Macintosh, J. Graham, R. Doyon, M. Bessell

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We present the preliminary findings of an investigation of the multiplicity of debris disk stars identified within our Volume-limited A-star (VAST) multiplicity survey. Previous studies have produced conflicting results regarding the multiplicity fraction of debris disk-hosting stars compared with non-excess stars. By combining our large-scale volume-limited AO survey of A-type stars with the all-sky WISE catalogue, we have investigated the frequency of binary companions to a large sample of A-type stars with and without measured 22μm excess. The results of this study will allow for a greater understanding of the interaction between a companion star and a circumstellar debris disk, informing future study into the formation and stability of planetary-mass companions within binary systems.

Original languageEnglish (US)
Title of host publicationExploring the Formation and Evolution of Planetary Systems
PublisherCambridge University Press
Number of pages2
ISBN (Print)9781107045200
StatePublished - Jun 2013

Publication series

NameProceedings of the International Astronomical Union
ISSN (Print)1743-9213
ISSN (Electronic)1743-9221


  • Stars: binaries: visual
  • Stars: circumstellar matter
  • Stars: early-type

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


Dive into the research topics of 'Debris disks and multiplicity within the 75pc volume-limited A-Star (VAST) survey'. Together they form a unique fingerprint.

Cite this