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in creator/contributor: "Kalas, P"  
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Sodium Laser Guide Star Adaptive Optics Imaging Polarimetry of Herbig Ae/Be Stars

Description: The future of high-resolution ground-based optical and infrared astronomy requires the successful implementation of laser guide star adaptive optics systems. We present the first science results from the Lick Observatory sodium beacon laser guide star system. By coupling this system to a near-infrared (J;H;Ks bands) dual-channel imaging polarimeter, we achieve very high sensitivity to light scattered in the circumstellar enviroment of Herbig Ae/Be stars on scales of 100-300 AU. Observations of … more
Date: January 8, 2004
Creator: Perrin, M D; Graham, J R; Lloyd, J P; Kalas, P; Gates, E L; Gavel, D T et al.
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Partner: UNT Libraries Government Documents Department
open access

Adaptive Optics Survey for Companions to stars with Extra-Solar Planets

Description: We have undertaken an adaptive optics imaging survey of extrasolar planetary systems and stars showing interesting radial velocity trends from high precision radial velocity searches. Adaptive Optics increases the resolution and dynamic range of an image, substantially improving the detectability of faint close companions. This survey is sensitive to objects less luminous than the bottom of the main sequence at separations as close as 1 inch. We have detected stellar companions to the planet be… more
Date: November 27, 2000
Creator: Lloyd, J. P.; Liu, M. C.; Graham, J. R.; Enoch, M.; Kalas, P.; Marcy, G. W. et al.
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Partner: UNT Libraries Government Documents Department
open access

The Gemini Deep Planet Survey - GDPS

Description: We present the results of the Gemini Deep Planet Survey, a near-infrared adaptive optics search for giant planets and brown dwarfs around nearby young stars. The observations were obtained with the Altair adaptive optics system at the Gemini North telescope and angular differential imaging was used to suppress the speckle noise of the central star. Detection limits for the 85 stars observed are presented, along with a list of all faint point sources detected around them. Typically, the observat… more
Date: June 1, 2007
Creator: Lafreniere, D; Doyon, R; Marois, C; Nadeau, D; Oppenheimer, B R; Roche, P F et al.
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Partner: UNT Libraries Government Documents Department
open access

An Adaptive Optics Survey for Companions to Stars with Extra-Solar Planets

Description: We have undertaken an adaptive optics imaging survey of extrasolar planetary systems and stars showing interesting radial velocity trends from high precision radial velocity searches. Adaptive Optics increases the resolution and dynamic range of an image, substantially improving the detectability of faint close companions. This survey is sensitive to objects less luminous than the bottom of the main sequence at separations as close as 1 inch. We have detected stellar companions to the planet be… more
Date: November 27, 2000
Creator: Lloyd, J. P.; Liu, M. C.; Graham, J. R.; Enoch, M.; Kalas, P.; Marcy, G. W. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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