Rene Doyon

Near Infrared Observations of GQ Lup b Using the Gemini Integral Field Spectrograph NIFS (2009)

Lavigne, Jean-Francois, Doyon, Rene, Lafreniere, David, Marois, Christian, Barman, Travis

We present new JHK spectroscopy (R ~ 5000) of GQ Lup b, acquired with the near-infrared integral field spectrograph NIFS and the adaptive optics system ALTAIR at the Gemini North telescope. Angular...

A Near-Infrared Survey of the Inner Galactic Plane for Wolf-Rayet Stars I. Methods and First Results: 41 New WR Stars (2009)

Shara, Michael M., Moffat, Anthony F. J., Gerke, Jill, Zurek, David R., Stanonik, Kathryn, Doyon, Rene, ...

The discovery of new Wolf-Rayet (WR) stars in our Galaxy via large-scale narrowband optical surveys has been severely limited by dust extinction. Recent improvements in infrared technology have made...

On the Age of the Widest Very Low Mass Binary (2008)

Artigau, Etienne, Lafreniere, David, Albert, Loic, Doyon, Rene

We have recently identified the widest very low-mass binary (2M0126AB), consisting of an M6.5V and an M8V dwarf with a separation of ~5100 AU, which is twice as large as that of the second widest...

SIMP: A Near-Infrared Proper Motion Survey (2008)

Artigau, Etienne, Lafreniere, David, Doyon, Rene, Albert, Loic, Robert, Jasmin, Malo, Lison

SIMP is a proper motion (PM) survey made with the Observatoire du Mont Megantic (OMM) wide-field near-infrared camera CPAPIR at the CTIO 1.5 m and OMM 1.6 m telescopes. The SIMP observations were...

Optical-mechanical operation of the F2T2 Filter: a tunable filter designed to search for First Light (2008)

Mentuch, Erin, Scott, Alan, Abraham, Roberto, Barton, Elizabeth, Bershady, Matthew, Bland-Hawthorn, Joss, ...

The Flamingos-2 Tandem Tunable filter is a tunable, narrow-band filter, consisting of two Fabry-Perot etalons in series, capable of scanning to any wavelength from 0.95 to 1.35 microns with a...

GROUND-BASED DIRECT DETECTION OF EXOPLANETS WITH THE GEMINI PLANET IMAGER (GPI) (2008)

James R. Graham, Bruce Macintosh, Rene Doyon, Don Gavel, James Larkin, Marty Levine, ...

The Gemini Planet (GPI) imager is an “extreme ” adaptive optics system being designed and built for the Gemini Observatory. GPI combines precise and accurate wavefront control, diffraction...

IRAS04325+2402C: A very low mass object with an edge-on disk (2008)

Scholz, Alexander, Jayawardhana, Ray, Wood, Kenneth, Lafreniere, David, Schreyer, Katharina, Doyon, Rene

IRAS04325+2402C is a low luminosity object located near a protostar in Taurus. We present new spatially-resolved mm observations, near-infrared spectroscopy, and Spitzer photometry that improve the...

Finding ultracool brown dwarfs with MegaCam on CFHT: method and first results (2008)

Delorme, Philippe, Willott, Chris J., Forveille, Thierry, Delfosse, Xavier, Reylé, Céline, Bertin, Emmanuel, ...

We present the first results of a wide field survey for cool brown dwarfs with the MegaCam camera on the CFHT telescope, the Canada-France Brown Dwarf Survey, hereafter CFBDS. Our objectives are to...

Finding ultracool brown dwarfs with MegaCam on CFHT: method and first results (2008)

Delorme, Philippe, Willott, Chris, Forveille, Thierry, Delfosse, Xavier, Reylé, Céline, Bertin, Emmanuel, ...

We present the first results of a wide field survey for cool brown dwarfs with the MegaCam camera on the CFHT telescope, the Canada-France Brown Dwarf Survey, hereafter CFBDS. Our objectives are to...

Finding ultracool brown dwarfs with MegaCam on CFHT: method and first results (2008)

Delorme, Philippe, Willott, Chris, Forveille, Thierry, Delfosse, Xavier, Reylé, Céline, Bertin, Emmanuel, ...

We present the first results of a wide field survey for cool brown dwarfs with the MegaCam camera on the CFHT telescope, the Canada-France Brown Dwarf Survey, hereafter CFBDS. Our objectives are to...

The Gemini Deep Planet Survey -- GDPS (2007)

Lafreniere, David, Doyon, Rene, Marois, Christian, Nadeau, Daniel, Oppenheimer, Ben R., Roche, Patrick F., ...

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...

Ground-Based Direct Detection of Exoplanets with the Gemini Planet Imager (GPI) (2007)

Graham, James R., Macintosh, Bruce, Doyon, Rene, Gavel, Don, Larkin, James, Levine, Marty, ...

The Gemini Planet (GPI) imager is an "extreme" adaptive optics system being designed and built for the Gemini Observatory. GPI combines precise and accurate wavefront control, diffraction...

A new algorithm for point spread function subtraction in high-contrast imaging: a demonstration with angular differential imaging (2007)

Lafreniere, David, Marois, Christian, Doyon, Rene, Nadeau, Daniel, Artigau, Etienne

Direct imaging of exoplanets is limited by bright quasi-static speckles in the point spread function (PSF) of the central star. This limitation can be reduced by subtraction of reference PSF images....

Discovery of the brightest T dwarf in the northern hemisphere (2006)

Artigau, Etienne, Doyon, Rene, Lafreniere, David, Nadeau, Daniel, Robert, Jasmin, Albert, Loic

We report the discovery of a bright (H=12.77) brown dwarf designated SIMP J013656.5+093347. The discovery was made as part of a near-infrared proper motion survey, SIMP (Sondage Infrarouge de...

The James Webb Space Telescope (2006)

Gardner, Jonathan P., Mather, John C., Clampin, Mark, Doyon, Rene, Greenhouse, Matthew A., Hammel, Heidi B., ...

The James Webb Space Telescope (JWST) is a large (6.6m), cold (50K), infrared-optimized space observatory that will be launched early in the next decade. The observatory will have four instruments: a...

Science with the James Webb space telescope (2006)

Gardner, Jonathan P., Mather, John C., Clampin, Mark, Doyon, Rene, Greenhouse, Matthew A., Hammel, Heidi B., ...

The scientific capabilities of the James Webb Space Telescope (JWST) fall into four themes. The End of the Dark Ages: First Light and Reionization theme seeks to identify the first luminous sources...

Shades of Black: Searching for Brown Dwarfs & Giant Planets (1998)

Walker, Gordon, Chapman, Scott, Mandushev, Georgi, Racine, Rene, Nadeau, Daniel, Doyon, Rene, ...

We have searched, so far in vain, for brown dwarfs or giant planets in the vicinity of several nearby stars using cameras built at Universite de Montreal attached to the CFHT Adaptive Optics system....