scholarly journals Near‐Infrared Adaptive Optics Imaging of High‐Redshift Quasars

2008 ◽  
Vol 673 (2) ◽  
pp. 694-702 ◽  
Author(s):  
Renato Falomo ◽  
Aldo Treves ◽  
Jari K. Kotilainen ◽  
Riccardo Scarpa ◽  
Michela Uslenghi
Keyword(s):  
Adaptive Optics ◽  
Near Infrared ◽  
High Redshift ◽  
Adaptive Optics Imaging

scholarly journals CATS: OPTICAL TO NEAR-INFRARED COLORS OF THE BULGE AND DISK OF TWOz= 0.7 GALAXIES USINGHUBBLE SPACE TELESCOPEAND KECK LASER ADAPTIVE OPTICS IMAGING

2008 ◽  
Vol 136 (4) ◽  
pp. 1523-1532 ◽  
Author(s):  
E. Steinbring ◽  
J. Melbourne ◽  
A. J. Metevier ◽  
D. C. Koo ◽  
M. R. Chun ◽  
...  
Keyword(s):  
Adaptive Optics ◽  
Near Infrared ◽  
Adaptive Optics Imaging

scholarly journals Near‐Infrared Adaptive Optics Imaging of QSO Host Galaxies

2006 ◽  
Vol 166 (1) ◽  
pp. 89-127 ◽  
Author(s):  
O. Guyon ◽  
D. B. Sanders ◽  
Alan Stockton
Keyword(s):  
Adaptive Optics ◽  
Near Infrared ◽  
Host Galaxies ◽  
Adaptive Optics Imaging

scholarly journals Diffraction Limited Imaging of High Redshift Galaxies with Adaptive Optics

2001 ◽  
Vol 205 ◽  
pp. 455-456 ◽  
Author(s):  
R.I. Davies ◽  
M. Lehnert ◽  
A.J. Baker ◽  
S. Rabien
Keyword(s):  
Adaptive Optics ◽  
Near Infrared ◽  
High Redshift ◽  
Diffraction Limit ◽  
High Redshift Galaxies ◽  
Distant Galaxies ◽  
Imaging And Spectroscopy ◽  
Intermediate Redshift ◽  
Initial Results ◽  
Redshift Galaxies

The major cornerstone of future ground-based astronomy is imaging and spectroscopy at the diffraction limit using adaptive optics. To exploit the potential of current AO systems, we have begun a survey around bright stars to study intermediate redshift galaxies at high resolution. Using ALFA to reach the diffraction limit of the 3.5-m telescope at Calar Alto allows us to study the structure of distant galaxies in the near-infrared at scales of 100-150 pc for z=0.05 and at scales 1.0-1.5 kpc at z=1. In this contribution we present the initial results of this project, which hint at the exciting prospects possible with the resolution and sensitivity available using an AO camera on the 8-m class VLT.

scholarly journals Resolving the Multiplicity of Exoplanet Host Stars in Gemini/NIRI Data

2022 ◽  
Vol 6 (1) ◽  
pp. 8
Author(s):  
Kim Miskovetz ◽  
Trent J. Dupuy ◽  
Jessica Schonhut-Stasik ◽  
Keivan G. Stassun
Keyword(s):  
Adaptive Optics ◽  
Proper Motion ◽  
Near Infrared ◽  
Planetary Systems ◽  
Unit Weight ◽  
Imaging Data ◽  
Infrared Imager ◽  
Adaptive Optics Imaging ◽  
Host Stars

Abstract The majority of stars have one or more stellar companions. As exoplanets continue to be discovered, it is crucial to examine planetary systems to identify their stellar companions. By observing a change in proper motion, companions can be detected by the acceleration they induce on their host stars. We selected 701 stars from the Hipparcos–Gaia Catalog of Accelerations (HGCA) that have existing adaptive optics imaging data gathered with Gemini/Near InfraRed Imager (NIRI). Of these, we examined 21 stars known to host planet candidates and reduced their archival NIRI data with Gemini’s DRAGONS software. We assessed these systems for companions using the NIRI images as well as Renormalized Unit Weight Error values in Gaia and accelerations in the HGCA. We detected three known visible companions and found two more systems with no visible companions but astrometric measurements indicating likely unresolved companions.

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