Debris Disks and Multiplicity within the 75pc Volume-limited A-Star (VAST) Survey. Issue Volume 8:Issue S299(2013) (6th January 2014)

• Record Type: Journal Article
• Authors: De Rosa, R. J.; Smith, B.; Bulger, J.; Patience, J.; Marois, C.; Song, I.; Macintosh, B.; Graham, J.; Doyon, R.; Bessell, M.
• Is Part Of: Proceedings of the International Astronomical Union. Volume 8:Issue S299(2013)
• Page Start: 334
• Page End: 335
• Publication Date: 2014-01-06
• Subjects: stars: circumstellar matter, -- stars: binaries: visual, -- stars: early-type; Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S174392131300882X
• Languages: English
• ISSNs: 1743-9213

Abstract

Abstract: 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.