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Dr. Tiantian Yuan

My overarching research goal is to understand how galaxies like our own Milky Way assembled and evolved from young galaxies in the early universe. To reach this goal, it is essential to establish a solid observational baseline for galaxies across cosmic time and in different environments. My research takes up the challenge of directly resolving high-redshift galaxies to the finest spatial scale. I have been using cutting-edge instrumentations including multi-slit spectrographs and adaptive optics aided integral field spectrographs (IFS) on the world’s largest telescopes, in conjunction with nature's largest magnifying glasses (aka gravitational lenses) to robustly measure physical properties (e.g., ISM, kinematics) of high redshift galaxies. My current ASTRO 3D project at Swinburne focuses on when and how spiral arms formed in the early universe. The formation of spiral arms is part of the unsolved puzzle of the origin of the Hubble sequence. Despite early successes in the 1960s-70s, we still don't know the necessary and sufficient conditions of spiral arm formation. Breakthroughs can come from observations of high-redshift galaxies, when spiral arms are in its earliest stage of formation. I am designing observational programs and working with theorists to understand the earliest formation of spiral arms and their relation to the formation of the thin disk.

Phone   +61 3 9214 5948
Fax   +61 3 9214 8797
Office   AR306
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