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Antranik Sefilian, PhD, will be joining the Department of Astronomy to study the dynamics that sculpt planetary systems.

Welcome! Dr. Antranik Sefilian our 2024 51 Pegasi b Fellow

Congratulations to Dr. Antranik Sefilian, who will be joining Steward Observatory as a 2024 51 Pegasi b Fellow, mentored by Department of Astronomy Associate Professor Kaitlin Kratter. During his time at Steward Observatory, Sefilian will be decoding the gravitational interplay between planets, and the remnants of their formation, to illuminate the dynamics that sculpt planetary systems. “We are really excited to host Dr. Sefilian here in Arizona, as he will bring together multiple research groups,” Kratter says. “His theoretical work on debris-disks links those of us who study disk dynamics with our colleagues at the forefront of observational science with JWST. 

Peculiar Orbits and Distant Particles

In the story of planet formation, debris disks stand as enduring relics. These expansive rings of rubble offer astronomers a window into each tumultuous...

Steward Observatory Professor Teaches Indigenous College Students About the Stars

Before Dr. Virginie Faramaz arrived at Steward Observatory as an assistant research professor, she had earned her PhD in exoplanetary system dynamics"trying to predict planets from the shape of comet belts"and she had completed two postdocs: one in Chile, and another at the Jet Propulsion Lab." She became faculty at University of Arizona during the pandemic, and she is currently interested in how...

Webb telescope takes its first images of forming planetary systems

A team led by Jarron Leisenring at the UArizona Steward Observatory has obtained the deepest look yet into planetary nurseries.

By taking advantage of the dust-penetrating capabilities of the James Webb Space Telescope's infrared instruments, designed and built in part by University of Arizona scientists, astronomers have obtained the first direct observations with the new space telescope of gas and dust feeding a nascent planetary system with raw material for planet formation.

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A Steward Postdoc Tells Cosmic Stories for Kids

This fall, Dr. Jaclyn Champagne, our JASPER postdoc researcher at Steward Observatory, wrote a compelling piece for ...

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