The VAST Survey - IV. A wide brown dwarf companion to the A3V star $\zeta$ Delphini

R J De Rosa,J Patience,Kimberly Wardduong,A Vigan,Christian Marois,Iickho Song,Bruce A Macintosh,James R Graham,Rene Doyon,Michael S Bessell,Olivier Lai,Donald W Mccarthy,Craig Kulesa

Monthly Notices of the Royal Astronomical Society（2014）

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摘要

We report the discovery of a wide comoving substellar companion to the nearby (D = 67.5 ± 1.1 pc) A3V star ζ Delphini based on imaging and follow-up spectroscopic observations obtained during the course of our Volume-limited A-Star (VAST) multiplicity survey. ζ Del was observed over a five-year baseline with adaptive optics, revealing the presence of a previously unresolved companion with a proper...

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techniques: high angular resolution,techniques: spectroscopic,binaries: visual,brown dwarfs,stars: early-type,stars: individual: ζ Del

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