# The VAST Survey - IV. A wide brown dwarf companion to the A3V star ζ Delphini

@article{Rosa2014TheVS,
title={The VAST Survey - IV. A wide brown dwarf companion to the A3V star $\zeta$ Delphini},
author={Robert J. De Rosa and Jennifer Lynn Patience and Kimberly Ward-Duong 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 Olivier Lai and Donald W Mccarthy and Craig Kulesa},
journal={Monthly Notices of the Royal Astronomical Society},
year={2014},
volume={445},
pages={3694-3705}
}
• R. D. Rosa, +10 authors C. Kulesa
• Published 2014
• Physics
• Monthly Notices of the Royal Astronomical Society
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 pres- ence of a previously unresolved companion with a proper motion consistent with that of the A-type primary. The age of the ζ Del system was estimated as… Expand

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#### References

SHOWING 1-10 OF 118 REFERENCES
DIRECT IMAGING DISCOVERY OF A “SUPER-JUPITER” AROUND THE LATE B-TYPE STAR κ And*
We present the direct imaging discovery of an extrasolar planet, or possible low-mass brown dwarf, at a projected separation of 55 ± 2 AU (1.''058 ± 0.''007) from the B9-type star κ And. The planetExpand
The VAST Survey - III. The multiplicity of A-type stars within 75 pc
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 toExpand
The VAST Survey - II. Orbital motion monitoring of A-type star multiples
As a part of our ongoing Volume-limited A-Star (VAST) adaptive optics survey, we have obtained observations of 26 binary systems with projected separations <100 AU, 13 of which have sufficientExpand
The Volume-limited A-Star (VAST) survey – I. Companions and the unexpected X-ray detection of B6–A7 stars
With an adaptive optics imaging survey of 148 B6―A7 stars, we have tested the hypothesis that unresolved lower mass companions are the source of the unexpected X-ray detections of stars in thisExpand
A brown dwarf companion to the intermediate-mass star HR 6037
Context. The frequency of brown dwarf and planetary-mass companions around intermediate-mass stars is still unknown. Imaging and radial velocity surveys have revealed a small number of substellarExpand
Discovery of a Wide Planetary-mass Companion to the Young M3 Star GU Psc
We present the discovery of a comoving planetary-mass companion ~42" (~2000 AU) from a young M3 star, GU Psc, a likely member of the young AB Doradus Moving Group (ABDMG). The companion was firstExpand
DISCOVERY OF AN ∼23 M Jup BROWN DWARF ORBITING ∼700 AU FROM THE MASSIVE STAR HIP 78530 IN UPPER SCORPIUS
• Physics
• 2011
We present the discovery of a substellar companion on a wide orbit around the ~ 2.5 M ☉ star HIP 78530, which is a member of the 5 Myr old Upper Scorpius association. We have obtained follow-upExpand
HIP 38939B: A NEW BENCHMARK T DWARF IN THE GALACTIC PLANE DISCOVERED WITH Pan-STARRS1
We report the discovery of a wide brown dwarf companion to the mildly metal-poor ([Fe/H] = –0.24), low Galactic latitude (b = 188) K4V star HIP 38939. The companion was discovered by its commonExpand
Brown dwarfs and very low mass stars in the Hyades cluster : a dynamically evolved mass function
Aims. We conducted a search for brown dwarfs (BDs) and very low mass (VLM) stars in the 625 Myr-old Hyades cluster in order to derive the cluster's mass function across the stellar-substellarExpand
HN Peg B: A Test of Models of the L to T Dwarf Transition
Luhman and collaborators recently discovered an early-T dwarf companion to the G0 dwarf star HN Peg, using Spitzer Infrared Array Camera (IRAC) images. Companionship was established on the basis ofExpand