Hi there!

I am Joanne Tan ORCID logo, a PhD researcher based at the Max Planck Institute for Astrophysics, located just ~25 minutes away from the heart of Munich, Germany. Here, I work with Dr. Thorsten Naab on topics broadly related to the cosmological formation and evolution of massive galaxies. My current research focuses on studying the multiphase circumgalactic medium (CGM) — we probe into metal absorption lines to trace the various phases of the CGM in cosmological simulations, in hopes of better understanding the enigmatic CGM.

Scroll along to learn more about me and my research!

Research Interests

Broadly speaking, I am interested in deepening my understanding of galaxy formation and evolution, as well as the co-evolutionary relationship between (massive) black holes and their host galaxies. As my current research focuses on studying galaxies and their CGM using computational methods, I am particularly keen on learning new methods to apply to my research.

Me in a nutshell

About me

Learn more about me :)


Current and past projects


Other than astronomy, I am also *very* passionate about good food and fun travels. I love to snap photos during my travels, and also before I devour delicious food. Check out my photo galleries below!

Travel photo gallery

Photos from my recent travels

Food photo gallery

Chronicling the noms I've enjoyed

Contact me

If you are interested in connecting with me regarding astronomy, feel free to email me at: jtan[at]mpa-garching[dot]mpg[dot]de! Always happy to connect with people who are interested in astronomy and excited to talk about astronomy :) You can also reach out to me on Bluesky .