Étienne Artigau

Étienne Artigau

Astrophysicist

Trottier Institute for Research on Exoplanets (iREx) · Université de Montréal

I am an astrophysicist at Université de Montréal, member of the Trottier Institute for Research on Exoplanets (iREx). My research focuses on brown dwarfs, exoplanets, and astronomical instrumentation.

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Research

I work on the detection and characterization of exoplanets and brown dwarfs in the solar
neighborhood. I am the scientific lead for the NIRPS
infrared spectrograph (installed at ESO's 3.6m telescope in Chile) and
SPIRou (at the Canada-France-Hawaii Telescope).

I have developed innovative high-precision velocimetry techniques that enable the detection
of Earth-mass planets around low-mass stars. More recently, I developed a method to measure
stellar temperature variations with unprecedented precision.

I am also involved in supporting the analysis algorithms for the
NIRISS instrument aboard the James Webb
Space Telescope, and in future algorithms for ANDES
on the ELT.

Recent work includes:

  • Ultra-precise measurement of stellar temperature variations (<1 Kelvin over months)

(publication)

  • Development of the Line-By-Line code for meter-per-second infrared radial velocities

(LBL project)

All this work is possible thanks to the iREx team. Visit the
institute page and subscribe to our
newsletter.

Research

Media & Publications

📚 View my publications on NASA ADS

Bird Photography

Outside of work, I am a passionate amateur birder. Since 1989, I have documented
over 47,000 bird observations around the world, along with thousands of photographs.

My photo gallery presents a selection of my best images, organized by species,
taxonomic family, and trip.

🐦 View gallery
Bird Photography