Steffani Grondin
University of California San Diego
San Diego, CA, USA
Observational astronomer; Binary stars, common envelope evolution, white dwarfs, star clusters, galactic archaeology, multi-wavelength observational astronomy
sgrondin@ucsd.edu
Hi!
I'm an NSERC Postdoctoral Fellow at the University of California San Diego. I study how binary star systems evolve (mainly via common envelope evolution) and shape some of the universe's most extreme astrophysical phenomena, including stellar mergers, Type Ia supernovae, gravitational waves, and more recently, radio transients. I'm also a developer of Corespray, a Python code for quickly simulating stellar and binary dynamical interactions in star cluster cores, which has applications to galactic archaeology, hypervelocity stars, stellar streams, and more. I received my PhD in Astronomy & Astrophysics from the University of Toronto in 2025 (Advisors: Prof. Maria Drout & Prof. Jeremy Webb) and my BSc in Physics & Astronomy at the University of British Columbia in 2020 (Advisor: Prof. Harvey Richer).
I’m passionate about making astronomy and STEM education accessible to rural communities across Canada and the U.S. Through my work as a 2025 IAU NA-ROAD Women & Girls in Astronomy Fellow and as a 2026 AAS Shapley Lecturer, I lead astronomy programs (career panels, hands-on astronomy tutorials, STEM education workshops, star parties and public lectures) tailored directly for girls, educators, and the public in remote areas to support STEM learning and bring awareness to pathways in higher eduction.
In my free time, you can find me racing in triathlons, climbing mountains, adding to my ever-expanding vinyl record collection and recently, surfing the beautiful waves of La Jolla, CA.
Check out my publications on the NASA ADS here!
Here is my CV.