Further deep imaging of HR 7329 A (η Tel A) and its brown dwarf companion B

@article{Neuhauser2011FurtherDI,
title={Further deep imaging of HR 7329 A ($\eta$ Tel A) and its brown dwarf companion B},
author={Ralph Neuhauser and Ch. Ginski and Tobias O. B. Schmidt and M. Mugrauer Astrophysikalisches Institut und Universitats-Sternwarte and Jena and H Germany},
journal={Monthly Notices of the Royal Astronomical Society},
year={2011},
volume={416},
pages={1430-1435}
}
About 4 arcsec south of the young A0-type star HR 7329, a faint companion candidate was found by Lowrance et al. Its spectral type of M7-8 is consistent with a young brown dwarf companion. Here we report 10 new astrometric imaging observations of the pair HR 7329 A and B, obtained with the Hubble Space Telescope and the Very Large Telescope, aimed at showing a common proper motion with high significance and possible orbital motion of B around A. With 11 yr of epoch difference between the first… Expand

Figures and Tables from this paper

Characterization of the gaseous companion κ Andromedae b - New Keck and LBTI high-contrast observations
Context. We previously reported the direct detection of a low mass companion at a projected separation of 55 2 AU around the B9 type star Andromedae. The properties of the system (mass ratio,Expand
New observations of the PZ Tel system, its substellar companion and debris disc⋆
• Physics
• 2012
We present follow-up high-contrast imaging data of PZ Tel B, the substellar companion of a solar analogue pre-main-sequence star and member of the approximately 12-Myr-old β Pic moving group. BetweenExpand
The near-infrared spectral energy distribution of β Pictoris b
A gas giant planet has previously been directly seen orbiting at 8-10 AU within the debris disk of the ~12 Myr old star {\beta} Pictoris. The {\beta} Pictoris system offers the rare opportunity toExpand
Astrometric follow-up observations of directly imaged sub-stellar companions to young stars and brown dwarfs
The formation of massive planetary or brown dwarf companions at large projected separations from their host star is not yet well understood. In order to put constraints on formation scenarios weExpand
THE HAWAII INFRARED PARALLAX PROGRAM. II. YOUNG ULTRACOOL FIELD DWARFS
• Physics
• 2016
(Abridged) We present a large, uniform analysis of young (~10-150 Myr) ultracool dwarfs, based on new high-precision IR parallaxes for 68 objects. We find that low-gravity (VL-G) late-M and L dwarfsExpand
The Gemini NICI Planet-Finding Campaign: The Frequency of Giant Planets around Young B and A Stars
We have carried out high contrast imaging of 70 young, nearby B and A stars to search for brown dwarf and planetary companions as part of the Gemini NICI Planet-Finding Campaign. Our surveyExpand
A survey of young, nearby, and dusty stars conducted to understand the formation of wide-orbit giant planets - VLT/NaCo adaptive optics thermal and angular differential imaging
Context. Over the past decade, direct imaging has confirmed the existence of substellar companions on wide orbits from their parent stars. To understand the formation and evolution mechanisms ofExpand
Direct Imaging of Extra-solar Planets - Homogeneous Comparison of Detected Planets and Candidates
• Physics
• 2012
Planets orbiting stars other than the Sun are called extra-solar planets or exo-planets. Since about 1989, several hundred such objects were detected using various techniques. The first companionsExpand
FURTHER EVIDENCE OF THE PLANETARY NATURE OF HD 95086 b FROM GEMINI/NICI H-BAND DATA
We present our analysis of the Gemini/NICI H-band data of HD 95086, following the discovery of the planet HD 95086 b in L'. The H-band data reach a contrast of 12.7 mag relative to the host star atExpand
Imaged substellar companions: not as eccentric as they appear? The effect of an unseen inner mass on derived orbits
• Physics
• 2014
Increasing numbers of sub-stellar companions are now being discovered via direct imaging. Orbital elements for some of these objects have been derived using star{companion astrometry, and several ofExpand

References

SHOWING 1-10 OF 46 REFERENCES
A Candidate Substellar Companion to HR 7329
We present the discovery of a candidate substellar companion from a survey of nearby young stars made with the Near-Infrared Camera and Multiobject Spectrometer coronagraph on the Hubble SpaceExpand
Direct detection of a substellar companion to the young nearby star PZ Telescopii
• Physics
• 2010
Aims. We study the formation of substellar objects (exoplanets and brown dwarfs) that are companions to young nearby stars. Methods. With high-contrast AO imaging obtained with NACO at ESO VLT, weExpand
Infrared spectrum and proper motion of the brown dwarf companion of HR 7329 in Tucanae
• Physics
• 2001
Up to now only four brown dwarf companions to normal stars have been found and confirmed by both spectroscopy and proper motion (namely Gl 229 B, G 196-3 B, Gl 570 D, and CoD$-33 ^{\circ} 7795$ B).Expand
Astrometric and photometric monitoring of GQ Lupi and its sub-stellar companion
• Physics
• 2008
Context. Neuhauser et al. (2005, A&A, 435, L13) presented direct imaging evidence for a sub-stellar companion to the young T Tauri star GQ Lupi. Common proper motion was highly significant, but noExpand
An Infrared coronagraphic survey for substellar companions
We have used the F160W filter (1.4–1.8 μm) and the coronagraph on the Near-Infrared Camera and Multi-Object Spectrometer (NICMOS) on the Hubble Space Telescope to survey 45 single stars with a medianExpand
THE GEMINI NICI PLANET-FINDING CAMPAIGN: DISCOVERY OF A CLOSE SUBSTELLAR COMPANION TO THE YOUNG DEBRIS DISK STAR PZ Tel*
We report the discovery of a tight substellar companion to the young solar analog PZ Tel, a member of the β Pic moving group observed with high-contrast adaptive optics imaging as part of the GeminiExpand
Resolved debris disc emission around η Telescopii: a young solar system or ongoing planet formation?
• Physics
• 2009
Aims. 60% of the A star members of the 12 Myr oldβ Pictoris moving group (BPMG) show significant excess emissi on in the mid-infrared, several million years after the proto-plane tary disk is thoughtExpand
Evidence for a co-moving sub-stellar companion of GQ Lup
• Physics
• 2005
We present a companion of the ≤2 Myr young classical T Tauri star GQ Lup in the Lupus star forming region at 140 ± 50 pc from imaging, astrometry, and spectroscopy. With direct K-band imaging usingExpand
Mid-infrared imaging of brown dwarfs in binary systems
• Physics
• 2008
Context. Brown dwarfs exhibit complex atmospheric signatures, and their properties are highly sensitive to effective temperature, surface gravity, and metallicity. Several physical properties ofExpand
Direct Imaging and Spectroscopy of Substellar Companions Next to Young Nearby Stars in TWA
Direct imaging of substellar companions is possible since several years around nearby stars (e.g. Gl 229) and young stars (e.g. TWA-5). We are searching for brown dwarfs and giant planets asExpand