The VAST Survey - III. The multiplicity of A-type stars within 75 pc

  title={The VAST Survey - III. The multiplicity of A-type stars within 75 pc},
  author={Robert J. De Rosa and Jennifer L. Patience and Paul A. Wilson and Adam C. Schneider and Sloane J. Wiktorowicz and Arthur Vigan and Christian Marois and Inseok Song and Bruce A. Macintosh and James R. Graham and Ren{\'e} Doyon and Michael S. Bessell and S. Thomas and Olivier Lai},
  journal={Monthly Notices of the Royal Astronomical Society},
With a combination of adaptive optics imaging and a multi-epoch common proper motion search, we have conducted a large volume-limited (D 6 75 pc) multiplicity survey of A- type stars, sensitive to companions beyond 30 au. The sample for the Volume- limited A- STar (VAST) survey consists of 435 A-type stars: 363 stars were observed with adaptive optics, 228 stars were searched for wide common proper motion companions and 156 stars were measured with both techniques. The projected separation… 
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