The Gemini Deep Planet Survey -- GDPS
David Lafreniere, Rene Doyon, Christian Marois, Daniel Nadeau, Ben R., Oppenheimer, Patrick F. Roche, Francois Rigaut, James R. Graham, Ray, Jayawardhana, Doug Johnstone, Paul G. Kalas, Bruce Macintosh, Rene Racine

TL;DR
The Gemini Deep Planet Survey used adaptive optics to search for giant planets and brown dwarfs around nearby young stars, setting upper limits on their occurrence and discovering new binary systems.
Contribution
This study provides the first statistical constraints on the frequency of giant planets and brown dwarfs at wide separations around young stars using high-contrast imaging.
Findings
Sensitive to planets >2 Mjup at 40-200 AU for typical targets.
All candidate companions were confirmed as background stars.
Set upper limits on the fraction of stars with giant planets and brown dwarfs.
Abstract
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 observations are sensitive to angular separations beyond 0.5" with 5-sigma contrast sensitivities in magnitude difference at 1.6 micron of 9.5 at 0.5", 12.9 at 1", 15.0 at 2", and 16.5 at 5". For the typical target of the survey, a 100 Myr old K0 star located 22 pc from the Sun, the observations are sensitive enough to detect planets more massive than 2 Mjup with a projected separation in the range 40-200…
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Taxonomy
TopicsSpace Exploration and Technology · Planetary Science and Exploration · Astro and Planetary Science
