Near-infrared adaptive optics imaging- and spectro-polarimetry with the infrared camera and spectrograph of the Subaru Telescope

2018 ◽  
Author(s):  
Motohide Tamura ◽  
Makoto Watanabe ◽  
Tae-Soo Pyo ◽  
Hiroshi Terada ◽  
Takashi Hattori ◽  
...  
Keyword(s):  
Adaptive Optics ◽  
Near Infrared ◽  
Infrared Camera ◽  
Adaptive Optics Imaging

scholarly journals Companion Detection Limits with Adaptive Optics Coronagraphy

2004 ◽  
Vol 202 ◽  
pp. 99-102
Author(s):  
B. R. Oppenheimer ◽  
R. G. Dekany ◽  
M. Troy ◽  
T. Hayward ◽  
B. Brandl
Keyword(s):  
Adaptive Optics ◽  
Focal Plane ◽  
Near Infrared ◽  
Dynamic Range ◽  
Infrared Camera ◽  
Nearby Star ◽  
Point Spread ◽  
Spread Function ◽  
Adaptive Optics System ◽  
Circular Disks

We present a study of the Palomar Adaptive Optics System and the PHARO near infrared camera in coronagraphic mode. The camera provides two different focal plane occulting masks–opaque circular disks 0.43 and 0.97″ across. Three different pupil plane apodizing masks (Lyot masks) are also provided. The six different combinations of Lyot mask and focal plane mask suppress differently the point spread function of a bright star centered on the focal plane mask. We obtained images of the bright nearby star Gliese 614 with all six different configurations in the K filter. We measured the dynamic range achievable with these configurations. Within 2.5″, the dynamic range is at least 8 magnitudes at the 5σ level and as high as 12 in a 1 s exposure. This represents a substantial gain over similar techniques without adaptive optics.

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 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.

Sign in / Sign up

Export Citation Format

Share Document